evo.com | Stio Shell Jackets > 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(TM) 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. RFID Pocket 150D PeakProof(TM) 3L Canvas 100% Recycled Polyester Stio's new PeakProof(TM) rating ensures a Teton-tested level of waterproof technology and breathable comfort for elevated action in mountain environments. 20 Denier Tricot Backer PeakProof Hydrophilic Membrane 20k Waterproofing / 20k Breathability Two-Way Underarm Venting | Stio Environ Jacket Men's 2026 - Small Blue | Polyester