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You need a jacket that's been tested in the steep and deep ski runs you love. That's why the Stio Environ Jacket exists, to protect you from the elements when fun is the priority. With Stio's highly reputed PeakProof™ 3L construction, this jacket is super weatherproof and easily layerable on warmer days thanks to its non-insulated shell design. Built to last for years, it is fully seam-sealed and backed by waterproof zippers on every exposed opening. Pit zips, pockets, a powder skirt, and a removable hood add customization, so you can be prepared for whatever the mountain has in store.
150 Denier PeakProof™ 3L Plain Weave (100% Recycled Polyester) – In our outdoor world, not all shell fabrics rate the same, which is why we decided to set a Stio® standard for mountain-rated protection you can trust when rough weather descends. Stio's new PeakProof™ rating ensures a Teton-tested level of waterproof technology and breathable comfort for elevated action in mountain environments.
80/20 PFAS-Free DWR Finish
PeakProof Hydrophilic Membrane – 20,000mm Waterproofness, 10,000 g/m2/24hrs Breathability
20 Denier Tricot Backer
Regular Fit – A casually shaped design that’s not too tight and not too baggy.
Center Back Length – 30" (Size M)
RFID Pocket
Interior Security Pocket
Interior Stash Pockets
Two-Way Venting at Underarm
Adjustable Snapback Snow Skirt with Custom Stio® Gripper Elastic
Removable, Helmet-Compatible Hood with Front and Peripheral Adjust
Adjustable Hook & Loop Cuffs with Easy-Grab, Custom Stio® Cuff Tab
YKK® Water-Resistant Aquaguard® Vislon® at Center Front Zipper
YKK® Water-Resistant Aquaguard® Pocket & Vent Zippers
Cohaesive® Cordlocks at Front & Peripheral Hood Adjust
Bonded Flap Conceals Cordlock at Back Hood
Brushed Tricot Interior Collar and Chin Guard
Center Front Interior Draft Flap
Hanger Loop on Center Back Neck
YKK® Reverse Coil Zipper at Hood
Adjustable Storm Sealing Hem
Custom Stio® Silicone Zipper Pulls
Ski Pass Loop at Interior Hem
Heat Transfer Stio® and Pinecone Logos
Fully Seam Sealed
Bonded Brim
Breathability Rating (g) | Breathability Level | Activity Level |
0 - 10000 | Low to moderate breathability | Resort skiing & snowboarding / walking / low intensity activity |
11000 - 15000 | Moderate breathability | Resort skiing & snowboarding / hiking / moderate intensity activity |
16000 - 20000 | High breathability | Backcountry skiing & snowboarding / backpacking / moderate to high intensity activity |
21000+ | Very high breathability | Backcountry skiing & snowboarding / biking / high intensity activity |
Warmth | Description | Ideal Conditions |
Shell | Outer shell with no insulation. Pair with base layers and mid layers to fine tune the level of warmth required. | Variable |
Warm | Light insulation. Use additional base or mid layers to add warmth when temperatures drop. | 20° - 35° |
Warmer | Moderate insulation. Suitable for cold conditions. | 10° - 25° |
Warmest | Heavy insulation. Designed to keep you comfortable and protected on the coldest days. | Below 15° |