What is Patagonia's warmth index and how does it compare Nano Puff vs Micro Puff?

Patagonia's warmth index is a proprietary rating system that measures insulation performance across their product line. The Nano Puff scores 27 on this warmth index while the Micro Puff scores 31, indicating the Micro Puff provides approximately 15% more warmth despite weighing less. This warmth index helps compare insulated jackets by measuring heat retention relative to weight and insulation type. The higher warmth index of the Micro Puff comes from its PlumaFill insulation technology, which provides superior warmth-to-weight ratio compared to the Nano Puff's PrimaLoft Gold Eco insulation.

What temperature rating does the Patagonia Nano Puff have?

The Patagonia Nano Puff has an estimated temperature rating of 35°F (2°C) as a midlayer or standalone jacket for moderate activity. This temperature rating means the Nano Puff works best in cool fall or spring conditions, or as a winter midlayer under a shell. For temperatures below freezing, pair the Nano Puff with a quality base layer and outer shell. The jacket's 60g PrimaLoft Gold Eco insulation and 20-denier shell provide reliable warmth for most three-season use.

What temperature rating does the Patagonia Micro Puff have?

The Patagonia Micro Puff has an estimated temperature rating of 34°F (1°C), making it slightly warmer than the Nano Puff for the same conditions. This temperature rating reflects the Micro Puff's superior warmth-to-weight ratio from its 65g PlumaFill insulation. The Micro Puff excels as a technical midlayer in cold weather layering systems or as a standalone piece during cool weather activities. Its higher warmth index rating of 31 versus the Nano Puff's 27 translates to better heat retention in similar conditions.

Nano Puff vs Micro Puff warmth comparison: which is warmer?

The Micro Puff is warmer than the Nano Puff according to Patagonia's warmth index, scoring 31 versus 27. This 4-point difference represents approximately 15% more warmth, achieved through the Micro Puff's PlumaFill insulation and efficient design. In practical terms, both jackets perform similarly in moderate conditions, but the Micro Puff provides a slight edge in colder weather while weighing 1.5 ounces less. For most users, the warmth difference is marginal, making other factors like durability and price more important in the decision.

Patagonia Nano Puff vs Micro Puff Review: How to decide

Q: How do Nano Puff and Micro Puff compare in weight and packability?

The Micro Puff (295g / 10.4oz) is lighter and more compressible than the Nano Puff (337g / 11.9oz), making it better suited for ultralight backpacking or travel where every ounce counts. Both jackets pack into a pocket, but the Micro Puff's lighter shell and efficient insulation compress smaller.

Image showing the fabric of the Patagonia Nano Puff vs Micro Puff

The more matte 20d fabric of the blue Patagonia Nano Puff vs the Micro Puff and its 10-denier face fabric in green

Our bottom line: Nano Puff vs Micro Puff

We like the versatility of the Patagonia Nano Puff. It works great as an everyday jacket and something for general outdoor activities. For most people, we recommend saving $50 and going with the Nano Puff over the Micro Puff. For those looking for the lightest technical midlayer, then the Micro Puff is an excellent choice. Ultimately, both offer incredible performance. Read on for important details to help with your decision.

Be sure to check out this article from Patagonia on everything that goes into making the Micro Puff. It's pretty amazing how much design and testing goes into this jacket.

Here's how Patagonia compares the two, and we've included the Nano-Air as well, which is absolutely worth considering for high-output activities.

Nano Puff and Nano-Air Variations

New for 2025, Patagonia released the Hi-Loft Nano Puff. It offers the same warmth as the Down Sweater but with the damp weather performance of synthetic insulation. See our in-depth review of the Hi-Loft here.

For really high output activities, the Patagonia Nano-Air Ultralight is awesome. It has a very small amount of insulation and works great with a base layer for cold runs or uphill skiing. We take a detailed look at the Nano-Air Ultralight in this article.

Patagonia Nano Puff vs Micro Puff Temperature Rating & Warmth Index Explained

Model	Patagonia Warmth Index (0 - 100)	Est. Temp (F/C)
Patagonia Down Sweater (Men's - Women's)	43	23 / -5
Patagonia Micro Puff (Men's - Women's)	31	32 / 0
Patagonia Nano-Air (Men's - Women's)	28	35 / 2
Patagonia Nano Puff (Men's - Women's)	27	35 / 2

When comparing the Patagonia Nano Puff vs Micro Puff, warmth is often discussed in terms of temperature rating—but Patagonia does not assign specific temperature limits to its jackets. Instead, the brand uses the Patagonia Warmth Index, a relative scale that compares how warm different jackets are under the same conditions. This index is meant for side-by-side comparison within Patagonia’s lineup rather than as a true temperature rating.

Here is a good page from Patagonia on how to layer for cold weather.

Based on the Patagonia Warmth Index, the Patagonia Micro Puff is rated slightly warmer than the Nano Puff, a difference we’ve also observed in field testing. To add real-world clarity, Outdoor Crunch has developed its own estimated temperature ratings based on a jacket's technical specs, our real world testing and typical use. You can read more about our approach to estimating temp ratings of jackets in this article. We estimate the Patagonia Nano Puff temperature rating at around 35°F / 2°C, while the Patagonia Micro Puff temperature rating comes in just slightly warmer at approximately 32°F / 0°C. In practical use, this difference doesn’t significantly change how or when most people will wear these jackets.

Overview: Patagonia Nano Puff vs Micro Puff

We like the closer fit of the Patagonia Nano Puff

The Patagonia Micro Puff has a looser and puffier fit.

The warmth of the Nano Puff and Micro Puff are very comparable. The Micro Puff is slightly warmer, as measured by Patagonia.
The 20-denier face fabric of the Nano Puff is burlier, which makes it more durable and abrasion resistant. It's also more matted. The 10-denier face fabric of the Micro Puff is smoother, shinier and slightly less durable.
Because of its lighter nylon face fabric and Plumafill insulation, the Micro Puff is a bit more breathable than the Nano Puff.
Both are regular fit and true to size for Patagonia jackets. However, we have found the Micro Puff to fit slightly looser and run about a half-inch longer than the Nano Puff.
Both jackets have two zippered handwarmer pockets. The Micro Puff also has two internal drop-in pockets; the Nano Puff has a single internal zippered chest pocket.
Packed sizes are nearly the same.

Our bottom line

We like the versatility of the Patagonia Nano Puff. For most people, we recommend saving $50 and going with the Nano Puff over the Micro Puff. For those looking for the lightest technical midlayer, then the Micro Puff is an excellent choice. Ultimately, both offer incredible performance. The matte look, closer fit, and rubberized zipper pulls sway us to the Nano Puff.

Why you should get the Nano Puff

You want a technical midlayer that also looks great around town.
You like the additional abrasion resistance and matte look offered by the 20d face fabric of the Nano Puff.
A zippered internal chest pocket is more important than internal drop-in pockets
You're not counting weight in grams and prefer the hardware details on the Nano Puff, like the rubberized zipper pulls.
You like both the Nano Puff and the Micro Puff, but you like the idea of saving $40 even more.

Why you should get the Micro Puff

You're looking for the lightest technical midlayer with the warmest insulation per ounce. Saving 1.5 ounces is worth the additional cost to you.
You value the extra space to stash gear and accessories provided by the two internal drop-in pockets

	Micro Puff	Nano Puff
MSRP	$279	$229
Insulation	65g PlumaFill recycled synthetic insulation	60g PrimaLoft Gold Eco recycled synthetic insulation
Warmth value (1-100)	29	26
Warm when wet	Yes	Yes
Weight	295g (10.4oz)	337g (11.9oz)
Outer	10-denier recycled nylon ripstop	20-denier recycled polyster ripstop
Pockets	2 zippered handwarmer pockets (left pocket serves as stuffsack); 2 internal drop-in pockets	2 zippered handwarmer pockets; 1 internal zippered chest pocket (doubles as stuffsack)
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Patagonia Nano Puff vs Micro Puff: Warmth

Patagonia uses an insulation warmth scale that rates their jackets relative to each other for the same conditions. This measurement is not a temperature rating but rather a way to compare the warmth between models. Based on this rating, the Micro Puff is slightly warmer than the Nano Puff. While we find this to be true in testing, the difference is so slight that it doesn't change the use of these pieces.

We're including the Patagonia Down Sweater and Patagonia Nano Air in this table for comparing warmth ratings.

Product Name	Insulated Warmth Rating (1 -100)
Patagonia Down Sweater Hooded	43
Patagonia Micro Puff Hooded	31
Patagonia Nano Air Hooded	28
Patagonia Nano Puff Hooded	27

Patagonia Nano Puff vs Micro Puff: Weather Resistance & Durability

The Patagonia Nano Puff has a 1.4-ounce, 20-denier, 100% recycled polyester ripstop shell.

The Patagonia Micro Puff has a Pertex® Quantum 0.8-ounce, 10-denier, NetPlus® 100% postconsumer recycled nylon ripstop shell made from recycled fishing nets.

Net Plus is very cool. Here is a really interesting page from Patagonia talking about how fishing nets become clothing: https://www.patagonia.com/netplus/

While there is no doubt that the Pertex® Quantum shell on the Patagonia Micro Puff is gorgeous, the Nano Puff has an edge in terms of abrasion resistance (e.g. durability) because of its 20-denier polyester ripstop face fabric.

The jackets are the same in terms of water and wind resistance. Neither is waterproof; both have a PFC-free DWR (durable water repellent) finish to help shed light amounts of moisture. Both the Nano Puff and Micro Puff are considered windproof.

You can feel the difference in the face fabrics just by touching the surfaces of both jackets. The Nano Puff is noticeably burlier.

Patagonia Nano Puff vs Micro Puff: Pockets

Closeup image of the Patagonia Nano Puff jacket handwarmer pocket zipped closed.

The Nano Puff handwarmer pocket has a traditional zipper construction.

Closeup image of the Patagonia Micro Puff jacket handwarmer pocket zipped closed.

The Patagonia Micro Puff features hidden zippers on the handwarmer pockets.

External Pockets

Both jackets have external handwarmer pockets. As you can see in the pictures above, the Patagonia Nano Puff has a traditional zipper while the Micro Puff uses hidden zips. The hidden zippers give the Micro Puff a clean look, but we find the zippers on the Nano Puff easier to use, especially with gloves on. The pockets have identical dimensions in both jackets: 10.6 in (27 cm) x 6.7 in (or 17 cm).

Internal Pockets

image of the check pocket on a Patagonia Nano Puff jacket

The Nano Puff has an internal zippered chest pocket.

Image of the internal dump pocket on a Patagonia Micro Puff

The Patagonia Micro Puff has two internal drop-in pockets.

The Micro Puff offers two internal dump pockets (referred to as "drop-in" pockets by Patagonia) that measure 11 in (28 cm) x 6.3 in (16 cm). The Nano Puff offers an internal zippered chest pocket that measures 10 in (25 cm) x 7 in (18 cm).

The benefit of the dump pockets is you get more storage. We love the dump pockets on the Arc'teryx Nuclei SV (read review) and Proton Heavyweight (read review). That said, we find that we use a zippered chest pocket more frequently, primarily to carry wallets and phones.

Patagonia Nano Puff vs Micro Puff: Packability

Image showing the Patagonia Nano Puff Vs Micro Puff when stuffed in their pockets.

The Nano Puff on the left is ever-so-slightly bulkier when packed, but the difference is negligible.

The Nano Puff stuffs into its interior chest pocket. The Micro Puff stuffs into its left handwarmer pocket. The Micro Puff is slightly harder to stuff due to the hidden zipper construction of the handwarmer pocket. Unfortunately, the zipper is prone to snagging when using it as a stuff sack.

Patagonia Nano Puff vs Micro Puff: Hardware

Image showing the different zippers of the Patagonia Nano Puff vs Micro Puff

The Patagonia Nano Puff has rubberized zipper pulls on all external zips, while the Micro Puff uses just shock cord.

The Patagonia Nano Puff features slightly larger (and thus easier to use) hardware. The Nano Puff uses a YKK #5 main zipper and has rubberized pulls on all exterior pockets. We're not sure why they chose not to use anything on the internal chest pocket, but that's a miss. The Patagonia Micro Puff uses a YKK #4.5 main zipper with narrow-gauge shock cord on all zipper pulls.

The other hardware difference is the waist adjustment barrel. The barrel and elastic cord are slightly larger on the Patagonia Nano Puff vs Micro Puff. There is hardly a functional difference, but you may find yourself searching for the adjuster on the Micro Puff with gloves on. Just like the hidden zippers, however, the end result is a cleaner look for the Micro Puff.

Image showing the different waist adjustment barrels on the Patagonia Nano Puff vs Micro Puff

The Patagonia Nano Puff (left) uses a slightly larger barrel and elastic cord for the waist adjustment. The Micro Puff has a cleaner execution with by hiding most of the thinner cord and adjuster.

Links:

The Patagonia Nano Puff and Micro Puff jackets, hooded jackets and vests have been staples in Patagonia's insulated apparel line for years. And because of their similarities, debating the relative merits of the Nano Puff vs Micro Puff is a common struggle when deciding which is best for you and your needs.

Both are lightweight, windproof, and easily packable layers that offer surprisingly good warmth for their minimalist feel. Plus, their synthetic insulation means they don't lose their insulating properties when wet (unlike down insulation).

So yes, the Nano Puff and Micro Puff have a lot in common. But it's their differences that will determine which is the better purchase for your needs.

We own the recent hooded versions of both jackets as well as the vest versions, and we've worn all of them extensively year-round.

Here's how Patagonia compares the two, and we've included the Nano-Air as well, which is absolutely worth considering for high-output activities. For an in-depth look at the newer Patagonia Nano-Air Ultralight, check out our article here.

FAQ - Patagonia Nano Puff vs Micro Puff

What’s the main difference between the Patagonia Nano Puff and Micro Puff jackets?

The core difference is in insulation and weight. The Nano Puff uses PrimaLoft Gold Eco insulation with a slightly heavier, more durable 20-denier shell, while the Micro Puff uses Patagonia’s PlumaFill insulation in a lighter 10-denier shell, giving it a better warmth-to-weight ratio and superior packability. Another key difference is that only the Nano Puff has an interior chest pocket, while the Micro Puff has two interior dump pockets. Generally, we think the Nano Puff is the better jacket for a mix of everyday use and outdoor activities, while the Micro Puff is a better ultralight technical jacket for backcountry adventures.

Which jacket is warmer and what are their temperature ratings?

Patagonia doesn’t publish exact temperature ratings, but based on Patagonia’s insulation warmth scale, the Micro Puff (31 on the warmth scale) is slightly warmer than the Nano Puff (28 on the warmth scale). However, the difference is small and neither jacket is designed for extreme cold without layering. Both perform well in cool to moderately cold conditions when paired with the right layers. At Outdoor Crunch we estimate the temperature rating of the Patagonia Nano Puff at 35° F / 2° C and the Micro Puff at 34° F / 1 °, so neither is sufficient for below freezing temps without a solid base layer. Here is a good page from Patagonia on how to layer for cold weather.

How do Nano Puff and Micro Puff compare in weight and packability?

The Micro Puff (295g 10.4oz) is lighter and more compressible than the Nano Puff (369g 13oz), making it better suited for ultralight backpacking or travel where every ounce counts. Both jackets pack into a pocket, but the Micro Puff’s lighter shell and efficient insulation compress smaller.

Is the Nano Puff or Micro Puff more durable or better for everyday use?

The Nano Puff’s 20-denier polyester shell is more abrasion-resistant and rugged for everyday wear or urban use, while the Micro Puff’s 10-denier nylon shell is more delicate but excels for technical outdoor pursuits. If durability and versatility are top priorities, Nano Puff often wins out.

Is the Micro Puff worth the higher price compared to the Nano Puff?

Yes, if your priority is lightweight performance and maximum warmth per ounce. For backpacking, travel, or as a technical mid-layer the Micro Puff’s 10d Pertex® Quantum fabric and advanced PlumaFill® insulation can justify the higher cost. For many users who want versatile warmth, durability, and everyday usability at a better value, the Nano Puff remains a popular choice.

Temperature ratings of Patagonia jackets

Name	Est. Temp (F/C)	Breathability	Wind Res.	Abrasion res.	Packability	Best pick for	Review	Pit venting?	Two way zipper?	Stuffs into itself?	Type	Fill Power (in3/oz)	Fill Weight (g)	Fill Volume (in3)	Synthetic Fill	Synth. Fill Weight	Face Fabric	Activity	Fit	Weight	Length (CB)	Discontinued?	atomproton	nucleiproton	bestsyntheticjackets	Internal pockets	External pockets	bestdownjackets	sentences
Arc'teryx Alpha Parka (Men's - Women's)	-15 / -26	No data	No data	No data	No data	Warmest Arc'teryx jacket.	Review	No	Yes	Yes	Down	850	296	8,875	Coreloft	90 g/m²	N30r 2L GoreTex Infinium	Climbing	Regular	805 g / 1 lb 12.4 oz	86 cm / 34 in	No						bestdownjackets	Fill weight of Arc'teryx Alpha Parka (Men's - Women's) is 296 grams. Its fill power is 850 cubic inches per ounce, which equals to a total of 8875 cubic inches of down fill volume. It's also reinforced with 90 g/m² of Coreloft.
Arc'teryx Alpha Lightweight (Men's - Women's)	5/-15	No data	No data	No data	No data			No	Yes	Yes	Down	850	117	3,508	Coreloft Compact	40 g/m²	Hadron 2L Gore-Tex Infinium	Climbing	Regular	540 g / 1 lb 3 oz	79.5 cm / 31.25 in	No						bestdownjackets	Fill weight of Arc'teryx Alpha Lightweight (Men's - Women's) is 117 grams. Its fill power is 850 cubic inches per ounce, which equals to a total of 3508 cubic inches of down fill volume. It's also reinforced with 40 g/m² of Coreloft Compact.
Arc'teryx Atom (aka LT) ( Men's - Women's)	43/6	9/10	6/10	7/10	5/10	High output activities.	Review	Yes, mesh	No	No	Synthetic	N/A	N/A	N/A	Coreloft Continuous	60 g/m²	20D Tyono	All Round	Trim	375 g / 13.2 oz	74 cm / 29.1 in	No	atomproton		bestsyntheticjackets	1x chest	-		Arc'teryx Atom (aka LT) ( Men's - Women's) is equipped with 60 g/m² of Coreloft Continuous.
Arc'teryx Atom SV (Men's - Women's)	18/-8	5/10	8/10	8/10	3/10		Review	Yes, mesh	No	No	Synthetic	N/A	N/A	N/A	Coreloft Continuous	120 g/m2	30D Tyono	All Round	Regular	455 g / 1 lb	74 cm / 29.1 in	No	atomproton		bestsyntheticjackets	1x chest	-		Arc'teryx Atom SV (Men's - Women's) is equipped with 120 g/m2 of Coreloft Continuous.
Arc'teryx Atom SL (Lightweight) (Men's - Women's)	52/11	10/10	2/10	7/10	6/10		Review	Yes, mesh	No	No	Synthetic	N/A	N/A	N/A	Coreloft Compact	40 g/m²	20D Tyono	All Round	Trim	270 g / 9.5 oz	72 cm / 28.3 in	No	atomproton		bestsyntheticjackets	-	-		Arc'teryx Atom SL (Lightweight) (Men's - Women's) is equipped with 40 g/m² of Coreloft Compact.
Arc'teryx Beta Down Insulated (Men's - Women's)	0/-18	No data	No data	No data	No data			Yes	Yes	No	Parka	850	126	3,778	Coreloft	80 g/m²	2L 40D Gore-Tex	All Round	Regular	760 g / 1 lb 10.8 oz	79 cm / 31 in	No						bestdownjackets	Fill weight of Arc'teryx Beta Down Insulated (Men's - Women's) is 126 grams. Its fill power is 850 cubic inches per ounce, which equals to a total of 3778 cubic inches of down fill volume. It's also reinforced with 80 g/m² of Coreloft.
Arc'teryx Beta Insulated (Men's)	21/-6	No data	No data	No data	No data		Review	Yes, zips	Yes	No	Parka	N/A	N/A	N/A	Coreloft Continuous	80 g/m²	2L 40D Gore-Tex	All Round	Regular	680 g / 1 lb 8 oz	78.5 cm / 31 in	No						bestdownjackets	Arc'teryx Beta Insulated (Men's) is equipped with 80 g/m² of Coreloft Continuous.
Arc'teryx Beta Insulated Coat (Women's)	16/-9	No data	No data	No data	Testing		Review	No	Yes	No	Parka	N/A	N/A	N/A	Coreloft	80 g/m² + 120 g/m²	2L 40D Gore-Tex	Around Town	Regular	600 g / 1 lb 5.2 oz	86 cm / 34 in	No						bestdownjackets	Arc'teryx Beta Insulated Coat (Women's) is equipped with 80 g/m² + 120 g/m² of Coreloft .
Arc'teryx Cerium (aka LT) (Men's - Women's)	26/-3	No data	No data	No data	No data	Light down jacket.	Review	No	No	Yes	Down	850	113	3,388	Coreloft	80 + 100 g/m²	Arato 15	All Round	Trim	335 g / 11.8 oz	72 cm / 28.3 in	No						bestdownjackets	Fill weight of Arc'teryx Cerium (aka LT) (Men's - Women's) is 113 grams. Its fill power is 850 cubic inches per ounce, which equals to a total of 3388 cubic inches of down fill volume. It's also reinforced with 80 + 100 g/m² of Coreloft.
Arc'teryx Cerium Hybrid (Women's)	44/7	No data	No data	No data	No data			No	No	Yes	Down	850	44	1,319	Coreloft	40 + 100 g/m²	Arato 15 + Fortius Air 50	All Round	Trim	260 g / 9.2 oz	70 cm / 27.5 in	No						bestdownjackets	#REF!
Arc'teryx Cerium SV (Men's / Women's)	2/-17	No data	4/10	7/10	No data	Warmest Cerium down jacket	Review	No	Yes	No	Down	1000	130	4,586	Coreloft	140 g/m²	20D Pertex® Diamond Fuse	All Round	Regular	436g / 15.4 oz	79 cm / 31 in	no
Arc'teryx Coelle (Women's)	14/-10	No data	No data	No data	No data			No	Yes	No	Parka	N/A	N/A	N/A	Coreloft	98 g/m²	40D 2L Gore-Tex	Around Town	Regular	435g / 15.3 oz	70 cm / 27.5 in	No							Arc'teryx Cerium Hybrid (Women's) is equipped with 98 g/m² of Coreloft.
Arc'teryx Liatris (Women's)	5/-15	No data	No data	No data	No data			No	No	No	Parka	850	93	2,788	Climashield	80 g/m2 + 60 g/m2	70D 3L Gore-Tex	Around Town	Regular	890 g / 1 lb 15.4 oz	75 cm / 29.5 in	No							Fill weight of Arc'teryx Liatris (Women's) is 93 grams. Its fill power is 850 cubic inches per ounce, which equals to a total of 2788 cubic inches of down fill volume. It's also reinforced with 80 g/m2 + 60 g/m2 of Climashield.
Arc'teryx Liatris Parka (Women's)	2/-17	No data	No data	No data	No data			No	No	No	Parka	850	136	4,078	Climashield	80 g/m2 + 60 g/m2	70D 3L Gore-Tex	Around Town	Regular	1.093 kg / 2 lb 6.6 oz	109 cm / 43 in	No							Fill weight of Arc'teryx Liatris Parka (Women's) is 136 grams. Its fill power is 850 cubic inches per ounce, which equals to a total of 4078 cubic inches of down fill volume. It's also reinforced with 80 g/m2 + 60 g/m2 of Climashield.
Arc'teryx Nuclei (aka FL) ( Men's - Women's)	32/0	2/10	9/10	2/10	10/10		Review	No	No	Yes	Synthetic	N/A	N/A	N/A	Coreloft Continuous	65 g/m²	Arato 10r	All Round	Regular	325 g / 11.5 oz	75 cm / 29.5 in	No		nucleiproton	bestsyntheticjackets	2x dump	-		Arc'teryx Nuclei (aka FL) ( Men's - Women's) is equipped with 65 g/m² of Coreloft Continuous.
Arc'teryx Nuclei SV (Women's)	5/-15	1/10	10/10	2/10	8/10	Warmest belay jacket.	Review	No	Yes	Yes	Synthetic	N/A	N/A	N/A	Coreloft Continuous	190 g/m2 + 90 g/m2	Arato 15	All Round	Regular	600 g / 1 lb 5.2 oz	81 cm / 31.8 in	No		nucleiproton	bestsyntheticjackets	2x dump	1x chest		Arc'teryx Nuclei SV (Women's) is equipped with 190 g/m2 + 90 g/m2 of Coreloft Continuous.
Arc'teryx Patera (Women's)	21/-6	No data	No data	No data	No data		Review	No	Yes	No	Parka	750	67	1,773	Coreloft	60 + 80 g/m²	2L Gore-Tex	Around Town	Trim	867 g / 1 lb 14.6 oz	99 cm / 39 in	No							Fill weight of Arc'teryx Patera (Women's) is 67 grams. Its fill power is 750 cubic inches per ounce, which equals to a total of 1773 cubic inches of down fill volume. It's also reinforced with 60 + 80 g/m² of Coreloft.
Arc'teryx Patera Long (Women's)	0/-18	No data	No data	No data	No data	Women's warmest parka.		No	Yes	No	Parka	750	204	5,397	Coreloft	60 + 80 g/m²	2L Gore-Tex	Around Town	Regular	1.1 kg / 2 lb 6.8 oz	117.5 cm / 46.25 in	No							Fill weight of Arc'teryx Patera Long (Women's) is 204 grams. Its fill power is 750 cubic inches per ounce, which equals to a total of 5397 cubic inches of down fill volume. It's also reinforced with 60 + 80 g/m² of Coreloft.
Arc'teryx Proton SL (Lightweight) (Men's - Women's)	48/9	8/10	4/10	7/10	6/10	Chilly summer mornings.	Review	No	No	No	Synthetic	N/A	N/A	N/A	Octa Loft	94 g/m²	Fortius Air 20	Climbing	Trim	343 g / 12.1 oz	75 cm / 29.5 in	No	atomproton	nucleiproton	bestsyntheticjackets	-	1x chest		Arc'teryx Proton SL (Lightweight) (Men's - Women's) is equipped with 94 g/m² of Octa Loft.
Arc'teryx Therme Parka (Men's)	5/-15	No data	No data	No data	No data		Review	No	Yes	No	Parka	750	120	3,175	Coreloft	60 + 80 g/m²	P75d Polyester	Around Town	Regular	991 g / 2 lb 3 oz	85 cm / 33.5 in	No							Fill weight of Arc'teryx Therme Parka (Men's) is 120 grams. Its fill power is 750 cubic inches per ounce, which equals to a total of 3175 cubic inches of down fill volume. It's also reinforced with 60 + 80 g/m² of Coreloft.
Arc'teryx Therme SV (Men's)	-11/-24	No data	No data	No data	No data	Men's warmest parka.	Review	No	Yes	No	Parka	750	211	5,582	Coreloft	60 g/m²	2L Gore-Tex	Around Town	Regular	1.072 kg / 2 lb 5.8 oz	96 cm / 37.75 in	No							Fill weight of Arc'teryx Therme SV (Men's) is 211 grams. Its fill power is 750 cubic inches per ounce, which equals to a total of 5582 cubic inches of down fill volume. It's also reinforced with 60 g/m² of Coreloft.
Arc'teryx Thorium ( Men's - Women's)	12/-11	No data	No data	No data	No data	Warm down jacket.	Review	No	Yes	Yes	Down	750	140	3,704	Coreloft	80 + 140 g/m²	Arato 30	All Round	Regular	517 g / 1 lb 2.2 oz	71.5 cm / 28.1 in	No						bestdownjackets	Fill weight of Arc'teryx Thorium ( Men's - Women's) is 140 grams. Its fill power is 750 cubic inches per ounce, which equals to a total of 3704 cubic inches of down fill volume. It's also reinforced with 80 + 140 g/m² of Coreloft.
Arc'teryx Thorium Parka (Women's)	-2/-19	No data	No data	No data	No data		Review	No	Yes	No	Down	750	209	5,529	Coreloft	80 + 140 g/m²	Arato 20	Around Town	Regular	610 g / 1 lb 5.5 oz	115.8 cm / 45.6 in	No						bestdownjackets	Fill weight of Arc'teryx Thorium Parka (Women's) is 209 grams. Its fill power is 750 cubic inches per ounce, which equals to a total of 5529 cubic inches of down fill volume. It's also reinforced with 80 + 140 g/m² of Coreloft.
Arc'teryx Thorium SV (Men's)	3/-16	No data	No data	No data	No data	Gore-Tex down jacket.		No	Yes	Yes	Down	750	169	4,471	Coreloft	80 + 140 g/m²	Arato 30 & 2L Gore-Tex Infinium	Around Town	Regular	645 g / 1 lb 6.8 oz	73 cm / 28.75 in	No						bestdownjackets	Fill weight of Arc'teryx Thorium SV (Men's) is 169 grams. Its fill power is 750 cubic inches per ounce, which equals to a total of 4471 cubic inches of down fill volume. It's also reinforced with 80 + 140 g/m² of Coreloft.
Arc'teryx Thorium SV Parka (Men's)	0/-18	No data	No data	No data	No data			No	Yes	No	Down	750	195	5,159	Coreloft	80 + 140 g/m²	Arato 30 & 2L Gore-Tex Infinium	Around Town	Regular	685 g / 1 lb 8.2 oz	85 cm / 33.5 in	No						bestdownjackets	Fill weight of Arc'teryx Thorium SV Parka (Men's) is 195 grams. Its fill power is 750 cubic inches per ounce, which equals to a total of 5159 cubic inches of down fill volume. It's also reinforced with 80 + 140 g/m² of Coreloft.
Black Diamond Access Down (Men's - Women's)	25/-4	No data	6/10	No data	No data	Daily all around jacket		No	No	Yes	Down	800	112	3,161	N/A	N/A	20D ripstop nylon	All Round	Regular	323 g / 11.4 oz	76 cm / 29.75 in	No						bestdownjackets	Fill weight of Black Diamond Access Down (Men's - Women's) is 112 grams. Its fill power is 800 cubic inches per ounce, which equals to a total of 3161 cubic inches of down fill volume.
Black Diamond Deploy Hoody (Men's - Women's)	27/-3	No data	6/10	No data	8/10	Ultralight jacket or midlayer.		No	No	Yes	Down	800	110	3,104	N/A	N/A	10D ripstop nylon	All Round	Regular	304 g / 10.7 oz
Black Diamond Mission Down Parka (Men's - Women's)	-5/-20	No data	No data	No data	No data	Extreme cold / Mountaineering		No	Yes	No	Down	800	252	7,111	N/A	N/A	Nylon with Liquid Crystal Polymer Ripstop	All Round	Regular	616 g / 21.7 oz	78 cm / 30.75 in
Feathered Friends Eos(Men's - Women's)	8/-13	No data	No data	No data	No data			No	No	Yes	Down	900	105	3,333	N/A	N/A	Pertex Quantum	All Round	Regular	306 g / 10.8 oz	?	No						bestdownjackets	Fill weight of Feathered Friends Eos(Men's - Women's) is 105 grams. Its fill power is 900 cubic inches per ounce, which equals to a total of 3333 cubic inches of down fill volume.
Feathered Friends Khumbu (Men's)	-17/-27	No data	No data	No data	No data			No	No	Yes	Down	900	378	12,000	Primaloft Gold	200 g/m²	Pretex Shield XT	All Round	Regular	960 g / 2 lb 2 oz	?	No						bestdownjackets	Fill weight of Feathered Friends Khumbu (Men's) is 378 grams. Its fill power is 900 cubic inches per ounce, which equals to a total of 12000 cubic inches of down fill volume. It's also reinforced with 200 g/m² of Primaloft Gold.
Feathered Friends Ellia (Women's)	23/-5	No data	No data	No data	No data			No	No	No	Down	900	138	4,381	N/A	N/A	Pertex® Endurance® LT	All Round	Regular	368 g / 13 oz
Feathered Friends Helios (Unisex)	18/-8	No data	No data	No data	No data			No	Yes	Yes	Down	900	185	5,873	N/A	N/A	20D Pertex® Quantum Pro®	All Round	Regular	426 g / 15 oz
Feathered Friends Volant (Unisex)	-13/-25	No data	No data	No data	No data			No	Yes	No	Down	900	311	9,873	N/A	N/A	20d recycled Pertex® Shield	All Round	Regular	732 g / 1 lb 9.8 oz
Patagonia AlpLoft (Men's)	-10/-23	No data	No data	No data	No data			No	Yes	Yes	Down	800	295	8,325	N/A	N/A	Pertex® Quantum	All Round	Regular	680 g / 1 lb 8 oz	81 cm / 31.8 in	No						bestdownjackets	Fill weight of Patagonia AlpLoft (Men's) is 295 grams. Its fill power is 800 cubic inches per ounce, which equals to a total of 8325 cubic inches of down fill volume.
Patagonia DAS (Men's - Women's)	10/-12	1/10	9/10	3/10	6/10		Review	No	Yes	Yes	Synthetic	N/A	N/A	N/A	PrimaLoft Gold Insulation Eco	133 + 40 g/m²	Pertex® Quantum Pro	All Round	Regular	555 g / 1 lb 3.6 oz	84 cm / 33 in	No			bestsyntheticjackets	2x dump	1x chest		Patagonia DAS (Men's - Women's) is equipped with 133 + 40 g/m² of PrimaLoft Gold Insulation Eco.
Patagonia DAS Light(Men's)	34/1	2/10	8/10	2/10	9/10		Review	No	Yes	Yes	Synthetic	N/A	N/A	N/A	PlumaFill	65 g	10D Pertex Quantum Pro	All Round	Regular	320 g / 11.3 oz	77 cm / 30.5 in	No			bestsyntheticjackets	-	1x chest		Patagonia DAS Light(Men's) is equipped with 65 g of PlumaFill.
Patagonia Down Sweater (Men's - Women's)	23/-5	No data	4/10	6/10	7/10		Review	No	No	Yes	Down	800	150	4,233	N/A	N/A	1.4 oz 20x30D polyester	All Round	Regular	428 g / 15.1 oz	67 cm / 26.25 in	No						bestdownjackets	Fill weight of Patagonia Down Sweater (Men's - Women's) is 150 grams. Its fill power is 800 cubic inches per ounce, which equals to a total of 4233 cubic inches of down fill volume.
Patagonia Downdrift (Men's - Women's)	18/-8	No data	No data	No data	No data			No	No	No	Down	600	279	5,905	N/A	N/A	4.2 oz polyester	Around Town	Regular	1.014 kg / 2 lb 3.8 oz	?	No						bestdownjackets	Fill weight of Patagonia Downdrift (Men's - Women's) is 279 grams. Its fill power is 600 cubic inches per ounce, which equals to a total of 5905 cubic inches of down fill volume.
Patagonia Fitz Roy (Men's - Women's)	14/-10	No data	No data	No data	No data			No	No	Yes	Down	800	128	3,612	N/A	N/A	20D Nylon	All Round	Regular	632 g / 1 lb 6.3 oz	74 cm / 29 in	No						bestdownjackets	Fill weight of Patagonia Fitz Roy (Men's - Women's) is 128 grams. Its fill power is 800 cubic inches per ounce, which equals to a total of 3612 cubic inches of down fill volume.
Patagonia Grade VII (Unisex)	-17/-27	4/10	5/10	4/10	6/10	Mountaineering / Extreme Cold		No	Yes		Down	900	372	11,810	N/A	N/A	0.8 oz 10-denier Pertex® Quantum Pro	All Round	Regular	712 g / 1 lb 9oz	87.5cm / 34.4 in
Men's Hi-Loft Nano Puff® Hoody Men's - Women's	23/-5	4/10	6/10	7/10	3/10	Winter synthetic	Review	No	Yes	No	Synthetic	N/A	N/A	N/A	PrimaLoft® Silver	200 + 170 g/m²	1.4 oz 20D 100% recycled polyester	All Round	Regular	760 g / 1 lb 10.8 oz)
Patagonia Isthmus (Men's)	36/2	No data	No data	No data	No data			No	No	No	Parka	N/A	N/A	N/A	ThermoGreen	60 g/m²	4.2 oz polyester	Around Town	Regular	895 g / 1 lb 15.6 oz	70 cm / 27.5 in	No							Patagonia Isthmus (Men's) is equipped with 60 g/m² of ThermoGreen.
Patagonia Jackson Glacier (Men's - Women's)	12/-11	No data	No data	No data	No data		Review	No	Yes	No	Down	700	141	3,482	N/A	N/A	3.6 oz 50D polyester	Around Town	Regular	880 g / 1 lb 15 oz	79 cm / 31 in	No						bestdownjackets	Fill weight of Patagonia Jackson Glacier (Men's - Women's) is 141 grams. Its fill power is 700 cubic inches per ounce, which equals to a total of 3482 cubic inches of down fill volume.
Patagonia Jackson Glacier Parks ( Women's)	7/-14	No data	No data	No data	No data			No	No	No	Parka	700	218	5,383	N/A	N/A	50D Polyester	Around Town	Regular	1.142 kg / 2 lb 8.3 oz	?	No							Fill weight of Patagonia Jackson Glacier Parks ( Women's) is 218 grams. Its fill power is 700 cubic inches per ounce, which equals to a total of 5383 cubic inches of down fill volume.
Patagonia Micro Puff (Men's - Women's)	32/0	5/10	6/10	5/10	8/10		Review	No	No	Yes	Synthetic	N/A	N/A	N/A	PlumaFill	65 g/m²	Pertex Quantum	All Round	Regular	298 g / 10.5 oz	75 cm / 29.5 in	No			bestsyntheticjackets	2x dump	-		Patagonia Micro Puff (Men's - Women's) is equipped with 65 g/m² of PlumaFill.
Patagonia Nano Air (Men's - Women's)	35/2	7/10	5/10	5/10	8/10		Review	No	No	Yes	Synthetic	N/A	N/A	N/A	FullRange	60 g/m²	33D nylon ripstop	All Round	Trim	401 g / 14.14 oz	?	No			bestsyntheticjackets	-	2x chest		Patagonia Nano Air (Men's - Women's) is equipped with 60 g/m² of FullRange.
Patagonia Nano Air Light Hybrid (Men's - Women's)	40/5	No data	No data	No data	No data			No	No	No	Synthetic	N/A	N/A	N/A	FullRange	40 g/m²	20D nylon ripstop	All Round	Trim	335 g / 11.8 oz	?	No							#REF!
Patagonia Nano Air Light Ultralight (Men's - Women's)	45/7	9/10	5/10	No data	No data	Running and high activity	Review	No	No		Synthetic	N/A	N/A	N/A	FullRange	20 g/m²	1.6-oz 30D shadow stretch polyester	High Output	Trim	249 g / 8.8 oz
Patagonia Nano Puff (Men's - Women's)	35/2	4/10	6/10	6/10	8/10		Review	No	No	Yes	Synthetic	N/A	N/A	N/A	PrimaLoft Gold Insulation Eco	60 g/m²	22D Polyester	All Round	Regular	363 g / 12.8 oz	71.5 cm / 28 in	No			bestsyntheticjackets	1x chest	-		Patagonia Nano Puff (Men's - Women's) is equipped with 60 g/m² of PrimaLoft Gold Insulation Eco.
Patagonia Silent Down (Men's - Women's)	26/-3	No data	No data	No data	No data		Review	No	No	No	Down	700	109	2,691	N/A	N/A	2.2 oz polyester	Around Town	Regular	585 g / 1 lb 4.7 oz	74 cm / 29 in	No						bestdownjackets	Fill weight of Patagonia Silent Down (Men's - Women's) is 109 grams. Its fill power is 700 cubic inches per ounce, which equals to a total of 2691 cubic inches of down fill volume.
Patagonia Stormshadow (Men's)	0/-18	No data	No data	No data	No data			No	No	No	Parka	700	259	6,395	N/A	N/A	75D Polyester	Around Town	Regular	1.182 kg / 2 lb 9.7 oz	?	No							Fill weight of Patagonia Stormshadow (Men's) is 259 grams. Its fill power is 700 cubic inches per ounce, which equals to a total of 6395 cubic inches of down fill volume.
Patagonia Stormshift Insulated (Men's - Women's)	25/-4	No data	8/10	No data	No data	Snowsports		Yes	No	No	Synthetic	N/A	N/A	N/A	ThermoGreen	100 + 60 g/m²	2L GORE-TEX ePE	Snowsports	Regular	940 g / 2 lb 1 oz
Patagonia Tres 3-in-1(Men's - Women's)	8/-13	No data	No data	No data	No data		Review	No	No	No	Parka	700	118	2,914	N/A	N/A	5.5 oz polyester	Around Town	Regular	1.307 kg / 2 lb 14.1 oz	85 cm / 33.5 in	No							Fill weight of Patagonia Tres 3-in-1(Men's - Women's) is 118 grams. Its fill power is 700 cubic inches per ounce, which equals to a total of 2914 cubic inches of down fill volume.
Rab Electron Pro (Men's - Women's)	5/-15	No data	No data	No data	No data			No	Yes	Yes	Down	800	180	5,079	N/A	N/A	20D Pertex Quantum Pro	All Round	Regular	525 g / 1 lb 2.5 oz	74 cm / 29 in	No						bestdownjackets	Fill weight of Rab Electron Pro (Men's - Women's) is 180 grams. Its fill power is 800 cubic inches per ounce, which equals to a total of 5079 cubic inches of down fill volume.
Rab Infinity Windstopper Down (Men's)	1/-17	No data	7/10	No data	No data			No	Yes	Yes	Down	800	194	5,475	N/A	N/A	30D GORE-TEX Windstopper	All Round	Regular	657 g / l lb 7 oz	77 cm / 30.3 in
Rab Microlight Alpine (Men's - Women's)	23/-5	No data	No data	No data	No data			No	No	Yes	Down	700	153	3,778	N/A	N/A	30D Pertex Quantum	All Round	Regular	466 g / 1 lb 0.5 oz	72 cm / 28.5 in	No						bestdownjackets	Fill weight of Rab Microlight Alpine (Men's - Women's) is 153 grams. Its fill power is 700 cubic inches per ounce, which equals to a total of 3778 cubic inches of down fill volume.
Rab Mythic G (Men's - Women's)	15/-9	No data	No data	No data	8/10			No	No	No	Down	1000	127	4,480	N/A	N/A	7D Atmos™ nylon w/ reflective lining.	All Round	Regular	277 g / 9.8 oz	72 cm / 28.5 in
Rab Mythic Ultra (Men's)	-5/-20	No data	No data	No data	No data			No	Yes	No	Down	900	240	7,619	N/A	N/A	10D Recycled Pertex® Quantum	Climbing	Regular	537 g / 1 lb 3 oz	76.5 cm / 30.1 in
Rab Neutrino Pro (Men's - Women's)	-2/-19	No data	No data	No data	No data			No	Yes	Yes	Down	800	212	5,982	N/A	N/A	20D Pertex Quantum Pro	All Round	Regular	585 g / 1 lb 8.6 oz	77 cm / 30.3 in	No						bestdownjackets	Fill weight of Rab Neutrino Pro (Men's - Women's) is 212 grams. Its fill power is 800 cubic inches per ounce, which equals to a total of 5982 cubic inches of down fill volume.
REI Co-op 650 (Men's - Women's)	30/-1	No data	No data	No data	No data			No	No	No	Down	650	99	2,270	N/A	N/A	Recycled ripstop nylon	All Round	Regular	312 g / 11 oz	72 cm / 28.5 in
REI Magma 850 (Men's - Women's)	26/-3	No data	No data	No data	No data			No	No	Yes	Down	850	111	3,328	N/A	N/A	Recycled ripstop nylon	All Round	Regular	312 g / 11 oz	74 cm / 29.25 in	No						bestdownjackets	#REF!
Stio Hometown Down (Men's - Women's)	12/-11	No data	No data	No data	No data		Review	No	No	No	Down	800	198	5,587	N/A	N/A	20D HTD™ 100% Recycled Nylon	All Round	Regular	581 g / 1 lb 4.5 oz
Stio Pinion Hooded (Men's - Women's)	26/-3	No data	No data	No data	No data			No	No		Down	800	125	3,527	N/A	N/A	20D Pertex® Quantum®	All Round	Regular	312 g / 11 oz	70 cm / 27.5 in
Stio Shot 7 Insulated Shell (Men's - Women's)	15/-9	6/10	8/10	No data	No data			Yes	Yes	No	Down	800	105	2,963	N/A	N/A	75D GORE-TEX® 2L 170g ePE	Snowsports	Regular	1.049kg / 2 lb 5 oz	77 cm / 30.5 in
Stio Colter (Men's - Women's)	15/-9	5/10	No data	No data	No data			Yes	No	No	Down	650	206	4,723	N/A	N/A	50D GORE-TEX WINDSTOPPER® 2L	All Round	Regular	850 g / 1 lb 14 oz	72 cm / 28.5 in

Assumptions: Worn over a thin shirt, no output, no precipitation, light to no wind. Values are always for size M and for men's, except for women's-only items.

Primary use of this spectrum is for comparison, rather than figuring out absolute temp ratings.

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About the Author Chris T.

Favorite Activities: All things bike (gravel, mtb, road, triathlon), Running, Telemark Skiing, Snowboarding, Hiking, Camping

Home mountain: Steamboat
Day job: Technology leader

Chris has an undergrad in computer information systems and an M.B.A. to help him in his quest to ski at least 90 days per year. He lives with his family in the mountains of Colorado.