Arc’teryx upgrades two of its most iconic alpine shells — now PFAS-free, more durable, and still ready for whatever extreme conditions you encounter in the mountains
Arc'teryx has long set the standard for high-performance alpine outerwear, dating back to its introduction of the iconic Alpha SV hard shell nearly 30 years ago. The newly released fall 2025 Alpha and Alpha SV jackets continue that tradition. Both Alpha models now feature the next-generation Gore-Tex PRO ePE, a PFAS-free waterproof-breathable membrane that’s lighter, tougher, and more sustainable than ever. (The Arc’teryx Beta AR just got refreshed with Gore-Tex PRO ePE as well; here’s our first look at that do-everything hard shell)
If you're a mountain athlete or hard-core weekend warrior who demands best-in-class protection for Alpine mountaineering, climbing, skiing, or whatever else takes you into extreme environments, the updates to these two jackets represent an exciting development in technical outerwear. Let’s dig deeper.
What’s New in the 2025 Alpha and Alpha SV?
Gore-Tex PRO ePE: The Next Chapter in Performance Shells
This is the first season Arc’teryx has introduced Gore-Tex PRO ePE across its professional alpine line. Unlike the legacy Gore-Tex PRO, this new ePE (expanded polyethylene) membrane is free from intentionally added PFAS, sometimes called “forever chemicals.”
Why it matters:
Environmental impact: The Alpha and Alpha SV are now 100% PFAS-free, from their waterproof membranes to their DWR (Durable Water Repellent) coatings.
Weight savings: The lighter PRO ePE membrane allows for the use of higher-denier face fabrics without increasing the overall weight of the shells. More on that below.
Durability: Arc’teryx claims the ePE versions are even more abrasion-resistant than previous generations. How? Because of that use of higher-denier nylon mentioned above.
Alpha vs. Alpha SV: What’s the Difference?
Arc'teryx Alpha Jacket (Fall 2025)
The fall 2025 Alpha SV in the Mars/Dynasty colorway
Purpose: Built for fast-and-light technical ascents and alpine climbing
Weight: 358g (12.6 oz)
Fabric: Lightweight 50D Hadron™ face fabric, reinforced with Vectran™ ripstop for strength
Key features: Harness-compatible pockets, internal dump pocket, pit zips, and RECCO® reflector
Ideal for: Climbers, alpinists, and fast-moving backcountry travelers who value minimal weight without compromising protection
Cost: $700 USD
Arc'teryx Alpha SV Jacket (Fall 2025)
The fall 2025 Alpha SV Jacket in the 24K Black colorway
Purpose: Designed for extreme exposure, extended expeditions, and the harshest alpine conditions. SV stands for "Severe Weather" in Arc'teryx's naming scheme.
Weight: 492g (1 lb, 1.4 oz)
Fabric: Burly 100D nylon face fabric paired with Gore-Tex PRO ePE for maximum durability
Key features: Helmet-compatible StormHood™, five external and internal pockets, harness stop hem adjusters, and RECCO® reflector
Ideal for: Guides, mountaineers, and backcountry explorers who need bombproof reliability above all else
Cost: $900 USD
Why Gore-Tex PRO ePE is a Big Deal
This is not just a minor spec upgrade — it’s an entirely redesigned waterproof, windproof and breathable membrane from longtime Arc’teryx partner Gore-Tex. Gore-Tex PRO ePE is:
PFAS-free: That means everything - the membrane, face fabric, and DWR (FC0) coating
Stormproof: Retains the elite 28,000mm+ waterproof performance for which Gore-Tex PRO is known
Durable and lighter: The PRO ePE membrane is half the width of previous PRO membranes, which allows Arc’teryx to scale up fabric denier for increased ruggedness without adding bulk or weight
Add to that a dope-dyed backer (a special production process that reduces water and energy use) and recycled face fabrics, and these new Alpha and Alpha SV jackets push the sustainability envelope without sacrificing technical performance.
FAQs: Arc'teryx Alpha & Alpha SV Jackets
What is Gore-Tex PRO ePE?
It’s a new PFAS-free waterproof membrane developed by Gore, designed to match or exceed the durability and waterproof performance of legacy Gore-Tex PRO while being more sustainable and lighter.
Are the 2025 Alpha and Alpha SV jackets fully waterproof?
Yes. Gore-Tex PRO ePE passes Gore’s Storm Test, simulating hurricane-force rain conditions, and meets or exceeds the waterproof standards of prior Gore-Tex PRO jackets.
Is the Alpha SV still the most durable Arc’teryx shell?
Absolutely. With its 100D nylon face fabric and rugged construction, the Alpha SV remains Arc’teryx’s most expedition-worthy, storm-resistant hard shell.
What’s the weight difference between the Alpha and Alpha SV?
That’s a 134-gram difference — significant if you’re counting grams but negligible if you’re facing 80 mph winds.
How do the jackets fit?
Both jackets feature a regular fit with enough room for layering. Expect the SV to feel slightly stiffer due to its higher-denier face fabric and more rugged construction.
Are both jackets PFAS-free?
Yes. From the Gore-Tex PRO ePE membrane to the face fabric and FC0 DWR coating, no intentionally added PFAS are used.
What’s the RECCO® reflector for?
It improves searchability in emergencies, especially in avalanche scenarios, and is now embedded discreetly in the hood brim of the Alpha.
Do the new versions cost more?
No, both the Alpha ($700) and Alpha SV ($900) retail for the same price as their previous versions. But if saving a little money means more to you than updating to the latest PFAS-free version, retailers like REI are already offering discounts on older models.
Final Thoughts
The Fall 2025 Alpha and Alpha SV are more than just updated jackets — they’re a sign of where technical outerwear is headed. Arc’teryx has pulled off something rare: improving durability without adding weight, and eliminating PFAS without compromising the performance so many of us depend on when we head into the mountains. If you're in the market for a high-end (and high-priced) hard shell for big adventures in the alpine, the updated Alpha and Alpha SV jackets are worth a long look.
