Micro & Nano Puff vs Down Sweater: Temp ratings & more

REI is on a rare sale. Don't miss. Patagonia's are like up to 70% off...
- https://www.rei.com/h/deals

I've got latest revisions of all three items. Scroll to the bottom to view the highlights of the update took place for Fall 2022 - Winter 2023 season.

Summary

Nano Puff vs Micro Puff vs Down Sweater Packed Sizes

All 3 items are stunning and won't disappoint - as long as you know what you're expecting.

It's mostly a down vs synthetic preference.

Down Sweater is warmer than the Nano/Micro Puffs (see temperature ratings below). But only consider it for dry areas. Down handles water contact terribly. This is why hoods are generally not recommended for down jackets.

Nano/Micro Puffs, on the other hand, are more weather resistant, longer and lighter than the Down Sweater.

Packed sizes are about the same.

BTW, I conducted a survey on the looks of Micro & Nano Puff. 100+ people participated.

Micro won by a nose. I personally find it to be much better looking. Would have guessed a bigger difference.

Which one do you think looks better?

Micro Puff 55

54 %

Nano Puff 46

46 %

If you're not planning to perform high output activities with these jackets...

Then I'd absolutely get the Down Sweater for dry areas. A stunning jacket. For damp areas, see this Nano Puff vs Micro Puff guide.

If you're planning to perform high output activities less than, say, once every two weeks with these jackets...

Then I'd get the Nano Puff for climbing & heavy backpack use (because it's a bit more durable), and Micro Puff for other activities (because it's a bit more breathable). Forget about getting a Down Sweater for this purpose.

If you're planning to perform high output activities more than, say, once every two weeks with these jackets...

Then forget about these jackets because none of them would cut it. Consider getting a DAS Light Hoody (Men's - Women's) or a Nano Air (Men's - Women's) instead.

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Just dropped

Macai Shell: https://arcteryx.com/us/en/shop/mens/macai-shell-jacket
Nita: https://arcteryx.com/us/en/shop/womens/nita-down-jacket
Epsilon: https://arcteryx.com/us/en/shop/mens/epsilon-insulated-hoody
Cerium Pants (yes, seriously): https://arcteryx.com/us/en/shop/mens/cerium-pant
Liatris: https://arcteryx.com/us/en/shop/womens/liatris-down-jacket
Thorium SV: https://arcteryx.com/us/en/shop/mens/thorium-sv-hoody
Proton Heavyweight: https://arcteryx.com/us/en/shop/mens/proton-heavyweight-hoody
Atom Shacket: https://arcteryx.com/us/en/shop/womens/atom-shacket
New Nano Air: https://patagonia.com/product/mens-nano-air-insulated-hoody/84367.html

Links:

Warmth

Check out the chart below for more information.

Temperature ratings of Patagonia jackets

Name	Est. Temp (F/C)	Review	Type	Fill Power (in3/oz)	Fill Weight (g)	Fill Volume (in3)	Synthetic Fill	Synth. Fill Weight	Face Fabric	Pit venting?	Two way zipper?	Stuffs into itself?	Activity	Fit	Weight	Length (CB)	Discontinued?
Arc'teryx Alpha (Men's - Women's)	-18/-28	Review	Down	850	296	8,875	Coreloft	90 g/m²	N30r 2L GoreTex Infinium	No	Yes	Yes	Climbing	Regular	805 g / 1 lb 12.4 oz	86 cm / 34 in	No
Feathered Friends Khumbu	-17/-27		Down	900	378	12,000	Primaloft Gold	200 g	Pretex Shield XT	No	No	Yes	All Round	Regular	960 g / 2 lb 2 oz	?	No
Arc'teryx Ceres SV (Men's - Women's)	-15/-26	Review	Down	850	240	7,196	Coreloft	?	Arato 30	No	Yes	Yes	All Round	Regular	880 g / 1 lb 15 oz	86 cm / 34 in	Yes
Mountain Equipment K7 (Men's)	-13/-25		Down	800	300	8,466	N/A	N/A	30D Drilite	No	Yes	Yes	All Round	Regular	820 g / 1 lb 13 oz	76 cm / 30 in	No
Rab Positron Pro (Men's)	-13/-25		Down	800	300	8,466	N/A	N/A	40D Pertex Quantum Pro	No	Yes	Yes	All Round	Regular	740 g / 1 lb 10 oz	85 cm / 33.5 in	No
Arc'teryx Therme SV (Men's)	-11/-24	Review	Parka	750	211	5,582	Coreloft	60 g/m²	2L Gore-Tex	No	Yes	No	Around Town	Regular	1.072 kg / 2 lb 5.8 oz	96 cm / 37.75 in	No
Patagonia Grade VII	-11/-24		Down	800	335	9,453	N/A	N/A	1.2 oz 15 & 20D Pertex Quantum	No	Yes	No	Around Town	Regular	743 g / 1 lb 10.1 oz	83 cm / 32.5 in	Yes
Patagonia AlpLoft (Men's - Women's)	-10/-23		Down	800	295	8,325	N/A	N/A	Pertex Quantom	No	Yes	Yes	All Round	Regular	680 g / 1 lb 8 oz	81 cm / 31.8 in	No
Arc'teryx Firebee AR (Men's - Women's)	-10/-23	Review	Down	800	225	6,349	N/A	N/A	Arato 7 & 10	No	Yes	Yes	All Round	Regular	680 g / 1 lb 8 oz	79 cm / 31 in	Yes
Mountain Equipment Exo (Men's)	-10/-23		Down	800	265	7,478	N/A	N/A	Nylon	No	Yes	Yes	All Round	Regular	770 g / 1 lb 11.2 oz	79 cm / 31 in	No
Arc'teryx Thorsen (Men's)	-7/-22	Review	Parka	750	192	5,079	Coreloft	60 g/m²	90D 2L Gore-Tex	No	Yes	No	Around Town	Regular	1.1 kg / 2 lb 5.4 oz	91 cm / 36 in	Yes
Patagonia Frozen Range (Men's - Women's)	-6/-21	Review	Parka	700	268	6,617	N/A	N/A	4 oz 75-denier polyester	No	No	No	Around Town	Regular	1.253 kg / 2 lb 12.2 oz	84 cm / 33 in	Yes
Mountain Equipment Li. Ec. (Men's - Women's)	-5/-20		Down	700	295	7,284	N/A	N/A	50D Drilite	No	Yes	No	All Round	Regular	822 g / 1 lb 13 oz	72 cm / 28 in	Yes
Arc'teryx Thorium Parka (Women's)	-2/-19	Review	Down	750	209	5,529	Coreloft	80 + 140 g/m²	Arato 20	No	Yes	No	Around Town	Regular	610 g / 1 lb 5.5 oz	115.8 cm / 45.6 in	No
Rab Neutrino Pro (Men's - Women's)	-2/-19		Down	800	212	5,982	N/A	N/A	20D Pertex Quantum Pro	No	Yes	Yes	All Round	Regular	585 g / 1 lb 8.6 oz	77 cm / 30.3 in	No
Arc'teryx Patera Long (Women's)	0/-18		Parka	750	204	5,397	Coreloft	60 + 80 g/m²	2L Gore-Tex	No	Yes	No	Around Town	Regular	1.1 kg / 2 lb 6.8 oz	117.5 cm / 46.25 in	No
Patagonia Stormshadow (Men's)	0/-18		Parka	700	259	6,395	N/A	N/A	75D Polyester	No	No	No	Around Town	Regular	1.182 kg / 2 lb 9.7 oz	?	No
Arc'teryx Beta Down Insulated (Men's)	0/-18		Parka	850	126	3,778	Coreloft	80 g/m²	2L 40D Gore-Tex	Yes	Yes	No	All Round	Regular	760 g / 1 lb 10.8 oz	79 cm / 31 in	No
Arc'teryx Dually Belay (Men's)	0/-18	Review	Synthetic	N/A	N/A	N/A	ThermaTek	92 g/m²	30D Nylon	No	Yes	Yes	Around Town	Regular	705 g / 1 lb 9 oz	84 cm / 33 in	Yes
Arc'teryx Centrale (Women's)	0/-18	Review	Parka	750	157	4,154	Coreloft	60 g/m²	N90p Nylon	No	Yes	No	Around Town	Regular	885 g / 1 lb 15.2 oz	95 cm / 37.5 in	Yes
Arc'teryx Thorium SV Parka (Men's)	0/-18		Down	750	195	5,159	Coreloft	80 + 140 g/m²	Arato 30 & 2L Gore-Tex Infinium	No	Yes	No	Around Town	Regular	685 g / 1 lb 8.2 oz	85 cm / 33.5 in	No
Arc'teryx Camosun (Men's)	0/-18	Review	Parka	750	105	2,778	Coreloft	140 g/m²	N150p-X Gore-Tex	No	No	No	Around Town	Trim	960 g / 2 lb 1.9 oz	80 cm / 31.5 in	Yes
Arc'teryx Cerium SV (Men's - Women's)	0/-18	Review	Down	850	162	4,857	Coreloft	80 + 140 g/m²	Arato 7 & 10	No	No	Yes	All Round	Regular	415 g / 14.6 oz	69.5 cm / 27.4 in	Yes
Arc'teryx Liatris Parka (Women's)	2/-17		Parka	850	136	4,078	Climashield	80 g/m2 + 60 g/m2	70D 3L Gore-Tex	No	No	No	Around Town	Regular	1.093 kg / 2 lb 6.6 oz	109 cm / 43 in	No
Arc'teryx Revet (Men's)	2/-17		Parka	750	?	N/A	N/A	N/A	20d nylon/spandex double weave	No	Yes	No	Around Town	Regular	755 g / 1 lb 10.6 oz	91 cm / 36 in	Yes
Arc'teryx Thorium SV (Men's)	3/-16		Down	750	169	4,471	Coreloft	80 + 140 g/m²	Arato 30 & 2L Gore-Tex Infinium	No	Yes	Yes	Around Town	Regular	645 g / 1 lb 6.8 oz	73 cm / 28.75 in	No
Arc'teryx Piedmont (Men's)	3/-16		Parka	750	218	5,767	N/A	N/A	Arato 10	No	Yes	Yes	Around Town	Regular	515 g / 1 lb 2.2 oz	82 cm / 32.25 in	Yes
Outdoor Research Sup. Alp. (Men's - Women's)	3/-16		Down	800	182	5,136	N/A	N/A	30D Pertex Quantum Pro	No	Yes	No	All Round	Regular	825 g / 1 lb 13.1 oz	85 cm / 33.5 in	No
Arc'teryx Fission SV (Men's - Women's)	3/-16	Review	Synthetic	N/A	N/A	N/A	Coreloft Continuous	90 + 65 g/m²	N80p-X Gore-Tex 2L	No	Yes	No	All Round	Regular	890 g / 1 lb 15.4 oz	81 cm / 31.8 in	Yes
Arc'teryx Alessa Long	3/-16		Parka	N/A	N/A	N/A	Coreloft	80 + 120 g/m²	N90p 2L Gore-Tex	No	No	No	Around Town	Regular	1.015 kg / 2 lb 3.8 oz	123 cm / 48.5 in	Yes
Arc'teryx Radsten Parka (Men's)	3/-16		Parka	N/A	N/A	N/A	Coreloft Compact	120 g/m²	NP100d Gore-Tex 2L	No	No	No	Around Town	Regular	745 g / 1 lb 10.3 oz	82 cm / 32.25 in	Yes
Rab Electron Pro (Men's - Women's)	5/-15		Down	800	180	5,079	N/A	N/A	20D Pertex Quantum Pro	No	Yes	Yes	All Round	Regular	525 g / 1 lb 2.5 oz	74 cm / 29 in	No
Rab Infinity Alpine (Men's)	5/-15		Down	800	175	4,938	N/A	N/A	30D & 13D Gore-Tex Infinium	No	Yes	Yes	All Round	Regular	551 g / 1 lb 3.4 oz	76.5 cm / 30.1 in	No
Arc'teryx Alpha Lightweight (Men's - Women's)	5/-15		Down	850	117	3,508	Coreloft Compact	40 g/m²	Hadron 2L Gore-Tex Infinium	No	Yes	Yes	Climbing	Regular	540 g / 1 lb 3 oz	79.5 cm / 31.25 in	No
Arc'teryx Therme Parka (Men's)	5/-15	Review	Parka	750	120	3,175	Coreloft	60 + 80 g/m²	P75d Polyester	No	Yes	No	Around Town	Regular	991 g / 2 lb 3 oz	85 cm / 33.5 in	No
Arc'teryx Liatris (Women's)	5/-15		Parka	850	93	2,788	Climashield	80 g/m2 + 60 g/m2	70D 3L Gore-Tex	No	No	No	Around Town	Regular	890 g / 1 lb 15.4 oz	75 cm / 29.5 in	No
Arc'teryx Macai (Men's)	5/-15	Review	Shell	750	69	1,825	Coreloft Compact	60 + 100 g/m²	N40p-X 3L Gore-Tex	Yes, zips	No	No	Ski/Snowboard	Regular	1 kg / 2 lb 4 oz	76 cm / 30 in	No
Arc'teryx Nuclei SV (Men's - Women's)	5/-15	Review	Synthetic	N/A	N/A	N/A	Coreloft Continuous	190 g/m2 + 90 g/m2	Arato 15	No	Yes	Yes	All Round	Regular	600 g / 1 lb 5.2 oz	81 cm / 31.8 in	No
Black Diamond Access Down (Men's - Women's)	7/-14		Down	700	155	3,827	N/A	N/A	30D ripstop nylon	No	Yes	Yes	All Round	Regular	442 g / 15.6 oz	76 cm / 29.75 in	No
Arc'teryx Kappa (Men's)	7/-14	Review	Synthetic	N/A	N/A	N/A	Coreloft Continuous	140 g/m²	N70p Gore Thermium	No	Yes	No	All Round	Regular	755 g / 1 lb 10.6 oz	80 cm / 31.5 in	Yes
Patagonia Jackson Glacier Parka (Men's - Women's)	7/-14		Parka	700	218	5,383	N/A	N/A	50D Polyester	No	No	No	Around Town	Regular	1.142 kg / 2 lb 8.3 oz	?	No
Arc'teryx Prema Down Coat (Women's)	7/-14		Parka	750	92	2,434	N/A	N/A	Nylon	No	Yes	No	Around Town	Regular	794 g / 1 lb 12 oz	117 cm / 46.1 in	Yes
Arc'teryx Radsten Insulated (Men's)	7/-14		Parka	N/A	N/A	N/A	Coreloft Compact	120 g/m²	NP100d Gore-Tex 2L	No	No	No	Around Town	Regular	715 g / 1 lb 9.2 oz	73 cm / 28.75 in	Yes
Rab Microlight Alpine (Men's - Women's)	7/-14		Down	700	153	3,778	N/A	N/A	30D Pertex Quantum	No	No	Yes	All Round	Regular	466 g / 1 lb 0.5 oz	72 cm / 28.5 in	No
Feathered Friends Eos	8/-13		Down	900	105	3,333	N/A	N/A	Pertex Quantum	No	No	Yes	All Round	Regular	306 g / 10.8 oz	?	No
Patagonia Macro Puff (Men's - Women's)	8/-13	Review	Synthetic	N/A	N/A	N/A	PlumaFill	135 + 90 g	10D Recycled nylon ripstop	No	No	No	All Round	Regular	435 g / 15.3 oz	79 cm / 31 in	Yes
Arc'teryx Macai Lightweight (aka LT) (Men's)	8/-13		Shell	750	49	1,296	Coreloft Compact	60 g/m²	N40p-X 3L Gore-Tex	Yes, zips	No	No	Ski/Snowboard	Regular	855 g / 1 lb 14.2 oz	74 cm / 29.1 in	No
Patagonia Tres 3-in-1 (Men's - Women's)	8/-13	Review	Parka	700	118	2,914	N/A	N/A	5.5 oz polyester	No	No	No	Around Town	Regular	1.307 kg / 2 lb 14.1 oz	85 cm / 33.5 in	No
Arc'teryx Seyla (Women's)	8/-13		Parka	750	92	2,434	N/A	N/A	Arato 10	No	Yes	No	Around Town	Regular	507 g / 1 lb. 1.9 oz.	87 cm / 34.4 in	Yes
Arc'teryx Koda (Men's)	8/-13		Parka	N/A	N/A	N/A	Coreloft	80 + 140 g/m²	N80p-X Gore-Tex	No	No	No	Around Town	Regular	720 g / 1 lb 9.4 oz	75 cm / 29.5 in	Yes
Patagonia DAS (Men's - Women's)	10/-12	Review	Synthetic	N/A	N/A	N/A	PrimaLoft Gold Insulation Eco	133 + 40 g	Pertex Quantum Pro	No	Yes	Yes	All Round	Regular	555 g / 1 lb 3.6 oz	84 cm / 33 in	No
Patagonia Vosque 3-in-1 (Women's)	10/-12	Review	Parka	N/A	N/A	N/A	ThermoLite	100 g	65% nylon, 35% polyester	No	No	No	Around Town	Regular	1.360 kg / 3 lb	90 cm / 35.5 in	No
Arc'teryx Thorium (Men's - Women's)	12/-11	Review	Down	750	140	3,704	Coreloft	80 + 140 g/m²	Arato 30	No	Yes	Yes	All Round	Regular	517 g / 1 lb 2.2 oz	71.5 cm / 28.1 in	No
Patagonia City Storm Down (Men's - Women's)	12/-11		Parka	700	191	4,716	N/A	N/A	4.2 oz polyester	No	No	Yes	All Round	Regular	468 g / 16.5 oz	91 cm / 36 in	Yes
Patagonia Jackson Glacier (Men's - Women's)	12/-11	Review	Down	700	141	3,482	N/A	N/A	3.6 oz 50D polyester	No	Yes	No	Around Town	Regular	880 g / 1 lb 15 oz	79 cm / 31 in	No
Arc'teryx Thorium AR 2020 (Men's - Women's)	14/-10	Review	Down	750	130	3,439	Coreloft	80 + 140 g/m²	Arato 30	No	No	Yes	All Round	Regular	490 g / 1 lb 1.3 oz	72 cm / 28.3 in	Yes
Patagonia Fitz Roy (Men's - Women's)	14/-10		Down	800	128	3,612	N/A	N/A	20D Nylon	No	No	Yes	All Round	Regular	632 g / 1lb 6.3 oz	74 cm / 29 in	No
Arc'teryx Sensa (Women's)	14/-10		Parka	N/A	N/A	N/A	Coreloft Compact	120 g/m²	NP100d Gore-Tex 2L	No	Yes	No	Around Town	Relaxed	785 g / 1 lb 11.7 oz	86 cm / 34 in	Yes
Arc'teryx Ralle (Men's)	14/-10		Parka	N/A	N/A	N/A	Coreloft	120 g/m²	N80p-X 2L Gore-Tex	No	Yes	No	Around Town	Regular	735 g / 1 lb 9.9 oz	83 cm / 32.5 in	No
Patagonia Hi-Loft (Men's - Women's)	14/-10	Review	Down	600	177	3,746	N/A	N/A	1.4 oz 30D polyester	No	No	Yes	All Round	Regular	540 g / 1 lb 3 oz	76 cm / 30 in	Yes
Arc'teryx Coelle (Women's)	14/-10		Parka	N/A	N/A	N/A	Coreloft	80 + 140 g/m²	40D 2L Gore-Tex	No	Yes	No	Around Town	Regular	?	95 cm / 37.4 in	No
REI Magma 850 Hoodie 2.0 (Men's - Women's)	14/-10		Down	850	120	3,598	N/A	N/A	Pertex mini ripstop nylon	No	No	Yes	All Round	Regular	340 g / 13.75 oz	74 cm / 29.25 in	No
Arc'teryx Beta Insulated Coat (Women's)	16/-9	Review	Parka	N/A	N/A	N/A	Coreloft	80 g/m² + 120 g/m²	2L 40D Gore-Tex	No	Yes	No	Around Town	Regular	600 g / 1 lb 5.2 oz	86 cm / 34 in	No
Arc'teryx Atom Heavyweight (aka AR) (Men's - Women's)	18/-8	Review	Synthetic	N/A	N/A	N/A	Coreloft Continuous	120 g/m2 + 80 g/m2 + 60 g/m2	30D Tyono	Yes, mesh	No	No	All Round	Regular	475 g / 1 lb	74 cm / 29.1 in	No
Patagonia Downdrift (Men's - Women's)	18/-8		Down	600	279	5,905	N/A	N/A	4.2 oz polyester	No	No	No	Around Town	Regular	1.014 kg / 2 lb 3.8 oz	?	No
Arc'teryx Magnus (Men's)	19/-7		Parka	N/A	N/A	N/A	Coreloft	80 g	N60p Gore-Tex 2L	No	No	No	Around Town	Regular	690 g / 1 lb 8.3 oz	83 cm / 32.5 in	Yes
Rab Infinity Microlight (Men's - Women's)	19/-7		Down	700	146	3,605	N/A	N/A	13D Gore-Tex Infinium	No	No	Yes	All Round	Regular	452 g / 15.9 oz	74 cm / 29.1 in	No
Arc'teryx Proton Heavyweight (Men's - Women's)	21/-6	Review	Synthetic	N/A	N/A	N/A	Coreloft	100 g/m2 + 60 g/m2	Fortius Air 50	No	No	No	All Round	Regular	540 g / 1 lb 3 oz	77 cm / 30.5 in	No
Arc'teryx Agrium (Men's - Women's)	21/-6		Down	850	117	3,508	N/A	N/A	Arato	No	No	Yes	All Round	Regular	365 g / 12.9 oz	75 cm / 29.5 in	Yes
Arc'teryx Beta Insulated (Men's - Women's)	21/-6	Review	Parka	N/A	N/A	N/A	Coreloft Continuous	80 g/m²	2L 40D Gore-Tex	Yes, zips	Yes	No	All Round	Regular	680 g / 1 lb 8 oz	78.5 cm / 31 in	No
Arc'teryx Patera (Women's)	21/-6	Review	Parka	750	67	1,773	Coreloft	60 + 80 g/m²	2L Gore-Tex	No	Yes	No	Around Town	Trim	867 g / 1 lb 14.6 oz	99 cm / 39 in	No
Patagonia Topley (Men's)	23/-5		Down	700	172	4,247	N/A	N/A	6 oz polyester	No	Yes	No	All Round	Regular	1.133 kg / 2 lb 8 oz	77 cm / 30.5 in	No
Arc'teryx Alpha IS (Men's)	23/-5		Synthetic	N/A	N/A	N/A	Coreloft Continuous	65 g/m²	N40p-X 2L Gore-Tex	No	Yes	Yes	Climbing	Regular	610 g / 1 lb 5.5 oz	78 cm / 30.75 in	Yes
Patagonia Down Sweater (Men's - Women's)	23/-5	Review	Down	800	150	4,233	N/A	N/A	1.4 oz 20x30D polyester	No	No	Yes	All Round	Regular	428 g / 15.1 oz	67 cm / 26.25 in	No
Arc'teryx Epsilon (Men's)	26/-3		Synthetic	N/A	N/A	N/A	Coreloft Compact	80 g/m²	Fortius 1.0	No	No	No	Around Town	Regular	644 g / 1 lb 6.7 oz	?	No
Patagonia Silent Down (Men's - Women's)	26/-3	Review	Down	700	109	2,691	N/A	N/A	2.2 oz polyester	No	No	No	Around Town	Regular	585 g / 1 lb 4.7 oz	74 cm / 29 in	No
Arc'teryx Therme Insulated (Men's)	26/-3	Review	Synthetic	N/A	N/A	N/A	Coreloft Compact	40 g/m²	2L Gore-Tex	No	No	No	Around Town	Regular	960 g / 2 lb 1.9 oz	73 cm / 28.75 in	Yes
Arc'teryx Cerium (aka LT) (Men's - Women's)	26/-3	Review	Down	850	113	3,388	Coreloft	80 + 100 g/m²	Arato 15	No	No	Yes	All Round	Trim	335 g / 11.8 oz	72 cm / 28.3 in	No
Mountain Hardwear GW/2 (Men's - Women's)	28/-2		Down	800	85	2,399	N/A	N/A	10D Ripstop Nylon	No	No	Yes	All Round	Trim	250 g / 8.8 oz	70 cm / 27.5 in	No
Arc'teryx Cerium LT 2020 (Men's - Women's)	28/-2	Review	Down	850	102	3,058	Coreloft	80 + 100 g/m²	Arato 10	No	No	Yes	All Round	Trim	305 g / 10.8 oz	72 cm / 28.3 in	Yes
Arc'teryx Nuclei (aka FL) (Men's - Women's)	32/0	Review	Synthetic	N/A	N/A	N/A	Coreloft Continuous	65 g/m²	Arato 10r	No	No	Yes	All Round	Regular	325 g / 11.5 oz	75 cm / 29.5 in	No
Patagonia DAS Light (Men's - Women's)	34/1	Review	Synthetic	N/A	N/A	N/A	PlumaFill	65 g	10D Pertex Quantum Pro	No	Yes	Yes	All Round	Regular	320 g / 11.3 oz	77 cm / 30.5 in	No
Patagonia Isthmus (Men's)	36/2		Parka	N/A	N/A	N/A	ThermoGreen	60 g	4.2 oz polyester	No	No	No	Around Town	Regular	895 g / 1 lb 15.6 oz	70 cm / 27.5 in	No
Patagonia AlpLight (Men's - Women's)	36/2		Down	800	100	2,822	N/A	N/A	0.8 oz 10D polyester	No	No	Yes	All Round	Slim	270 g / 9.5 oz	74 cm / 29 in	No
Arc'teryx Proton (aka LT) (Men's - Women's)	37/3	Review	Synthetic	N/A	N/A	N/A	Coreloft Compact	80 g/m2 + 60 g/m2	Fortius Air 20	No	No	No	Climbing	Trim	375 g / 13.2 oz	75 cm / 29.4 in	No
Patagonia Nano Puff (Men's - Women's)	37/3	Review	Synthetic	N/A	N/A	N/A	PrimaLoft Gold Insulation Eco	60 g	22D Polyester	No	No	Yes	All Round	Regular	363 g / 12.8 oz	71.5 cm / 28 in	No
Arc'teryx Norvan SL Ins. (Men's - Women's)	39/4		Shell	N/A	N/A	N/A	Coreloft Compact	40 g/m²	Gore-Tex ShakeDry	No	No	Yes	Running	Trim	270 g / 9.5 oz	71.5 cm / 28.1 in	Yes
Patagonia Micro Puff (Men's - Women's)	41/5	Review	Synthetic	N/A	N/A	N/A	PlumaFill	65 g	Pertex Quantum	No	No	Yes	All Round	Regular	298 g / 10.5 oz	75 cm / 29.5 in	No
Patagonia Nano Air (Men's - Women's)	41/5	Review	Synthetic	N/A	N/A	N/A	FullRange	60 g	33D nylon ripstop	No	No	Yes	All Round	Trim	318 g / 11.2 oz	?	No
Arc'teryx Atom (aka LT) (Men's - Women's)	43/6	Review	Synthetic	N/A	N/A	N/A	Coreloft Continuous	60 g/m²	20D Tyono	Yes, mesh	No	No	All Round	Trim	375 g / 13.2 oz	74 cm / 29.1 in	No
Arc'teryx Cerium Lightweight (aka SL) (Women's)	43/6	Review	Down	850	58	1,739	Coreloft	40 + 100 g/m²	Arato 7	No	No	Yes	All Round	Trim	215 g / 7.6 oz	69 cm / 27.2 in	No
Arc'teryx Cerium Hybrid (Men's)	44/7		Down	850	44	1,319	Coreloft	40 + 100 g/m²	Arato 15 + Fortius Air 50	No	No	Yes	All Round	Trim	260 g / 9.2 oz	70 cm / 27.5 in	No
Arc'teryx Proton Hybrid (Men's - Women's)	46/8	Review	Synthetic	N/A	N/A	N/A	Coreloft Compact	40 g/m²	Fortius Air 50	No	No	No	All Round	Trim	365 g / 12.9 oz	76 cm / 30 in	No
Arc'teryx Proton Lightweight (aka FL) (Men's - Women's)	48/9	Review	Synthetic	N/A	N/A	N/A	Octa Loft	94 g/m²	Fortius Air 20	No	No	No	Climbing	Trim	343 g / 12.1 oz	75 cm / 29.5 in	No
Patagonia Nano Air Light Hybrid (Men's - Women's)	50/10		Synthetic	N/A	N/A	N/A	FullRange	40 g	20D nylon ripstop	No	No	No	All Round	Trim	335 g / 11.8 oz	?	No
Arc'teryx Atom Lightweight (aka SL) (Men's - Women's)	52/11	Review	Synthetic	N/A	N/A	N/A	Coreloft Compact	40 g/m²	20D Tyono	Yes, mesh	No	No	All Round	Trim	270 g / 9.5 oz	72 cm / 28.3 in	No

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.

Make sure to check this out:

https://patagonia.com/shop/web-specials

Impact of packing & unpacking repeatedly

Let's assume 5 years of use and occasional packing & unpacking.

This does have an impact on warmth of every single jacket out there. Although it does have its downsides too, down handles this better compared to synthetics.

Over the years of repeated packing and unpacking, down is more prone to clumping and/or shifting inside the jacket, compared to synthetic insulators (Nano/Micro Puff).

This can especially happen if the jacket gets soaked AND is not dried properly, again and again.

Fit

I'm 5'11", 165 lbs, athletic build. Size M fits me perfectly.

My size is always the same. Arc'teryx, Patagonia, TNF, Salomon, Columbia, Nike, Adidas, Under Armour, Zara... Doesn't matter.

Arc'teryx's 2024 men's fit revision

Straight from arcteryx.com on what's changed:

Source: https://arcteryx.com/us/en/help/sizing/mens/tops/new

Not all jackets come with revised fit. Only the ones with following statement.

Poll

Poll

Gently patting and redistributing the down inside the jacket can certainly restore its initial distribution.

But the downside of Nano/Micro Puff in this regard is more permanent.

Synthetic fibers break down with repeated compression and decompression. This can mostly cause a reduction in loft and insulating capabilities.

Packability

Some sites may claim that the Down Sweater doesn't pack into its own pocket - but it does.

Nano Puff and Down Sweater pack into the internal zippered chest pocket. Whereas the Micro Puff packs into the left hand warmer.

Nano Puff vs Micro Puff vs Down Sweater: Packability

Bigger zipper pulls of Micro Puff make it easier to pack with the gloves on.

Pockets

Let's take a look at the dimensions.

Down Sweater:
- Two internal dump pockets: 11 in (or 28 cm) height x 7.1 in (or 18 cm) width
Micro Puff:
- Two internal dump pockets: 11 in (or 28 cm) height x 6.3 in (or 16 cm) width
Nano Puff:
- One internal zippered chest pocket: 9.9 in (or 25 cm) x 7.1 in (or 18 cm)

Hand warmers are identical in all. They measure 10.6 in (or 27 cm) x 6.7 in (or 17 cm) for each pocket.

One thing to consider here can be that the internal dump pockets of Nano Puff and Down Sweater overlap with hand warmers that take place on the other side of the garment.

This might make the jacket less comfortable when you fill all of them up.

But still, more storage is more storage. I don't necessarily need full comfort all the time. I personally always prefer dump pockets over internal zippered chest pockets. Filling those up close to their limit is mostly even more uncomfortable.

Weather & Abrasion resistances

In terms of water resistance, wind resistance, and abrasion resistance; this isn't even close. Winners are Nano Puff and Micro Puff by a fair margin.

Breathability

None of these jackets offer substantial breathability. Although Nano & Micro Puff are better.

Historical revisions

Below are the highlights of Winter 2023 updates of these jackets.

Down Sweater:

Fill weight is increased from 104 grams to 150 grams (main update),
Number of internal drop-in pockets has been increased from 1 to 2,
Outer fabric is now NetPlus (recycled waste) shell.

Micro Puff:

Number of internal drop-in pockets has been increased from 1 to 2,
Outer fabric is now NetPlus (recycled waste) shell.

There has also been small changes made in the colors, fit and hood sizes.

Chats with customer service reps

These are old but might help some of you.

Patagonia Micro Puff vs Down Sweater Rep Chat 3

Patagonia Micro Puff vs Down Sweater Rep Chat 4

Links: