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The Environ jacket has a detachable hood, powder skirt, and extra pocket while the Environ XT does not. Please reach out to customerexperience@stio.com if you have any further questions!
Without sacrificing an ounce of durability and protection, the XT offers a streamlined feature set with high-set hand pockets for easy access when wearing a pack and an RFID pass pocket. Built with the same fabric as the award-winning Environ Collection, the XT features 3L PeakProof™ waterproof/breathable recycled fabric that’s tough enough to take a beating, but still rolls up nicely for stashing in your pack. Cohaesive™ cord-lock technology on the hood and hem allow for one-handed adjustments and two-way underarm zip vents ditch excess heat. The fixed hood with a bonded brim fits over your helmet in full-on conditions, and there are plenty of zippered pockets on the chest and interior with drop-in stash pockets to secure your phone, gloves and other essentials.
PeakProof™ 3L Plain Weave, 100% Recycled Polyester 150 Denier Face Fabric, PeakProof™ Hydrophilic Membrane 20,000mm Waterproofness, 10,000 g/m2/24hrs Breathability, 20 Denier Tricot Backer, 194 g/m2, with an 80/20 PFAS-Free DWR Finish
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. Our PeakProof™ rating ensures a Teton-tested level of waterproof technology and breathable comfort for elevated action in mountain environments.
As caretakers of the mountain life, we recognize our responsibility to support organizations and people who share our vision to drive positive change for people and the planet. We’re proud to partner with some tremendous organizations in their missions to responsibly advance outdoor recreation and protect our wild surroundings.
We are committed to building garments that are durable, timeless and continue to perform season after season. After years of research, testing and product development, in 2024 we completely removed PFAS from all of our newly developed products. We remain committed to growing our Preferred Materials usage, which includes organic cotton, recycled materials and responsibly-sourced down and wool, to 75% by the end of 2025.
Our apparel is built to last. As a part of our efforts to reduce waste and keep more gear in the mountains where it belongs, our home-grown gear renewal program allows previously-used items to be traded in, cleaned, repaired and circulated back into use.
Outside Unscripted | Dani Reyes-Acosta
The further from perfection, the closer to joy. Dani Reyes-Acosta finds her greatest inspiration in the untamed outdoors, forging her own path through rugged landscapes and ever-changing terrain. Whether climbing, riding, or exploring remote wilderness, she embraces the unscripted beauty of the journey—where every experience leaves her transformed.Of Food, Fishing & Freedom
Chef, fly angler and Stio Mountain Athlete Ranga Perera takes us to a few of his favorite moments while filming Flavor On The Fly, from frying up fresh perch on the shores of Lake Champlain, to being guided for the first time by a fellow Person Of Color while fishing in Central Park. It’s a reflection on the ways fishing and food nourish our roots and bring us all together at the same table.Mountain Perspectives | Riding Home
What makes mountain culture—or, more accurately, who? Mountain Perspectives is our short film series honoring a few of the individuals who champion the mountain culture we live for. In this episode, meet Stio Mountain Athlete Ryan Cochran-Siegle and learn how he recharges during the off-season as an alpine ski racer.
Most folks have found our Environ XT Jacket to run "true to size." You'll find a size guide on the product page to help with choosing a size. We have free returns and exchanges if you don't nail the fit the first time. For additional fit questions, we hope you'll reach out at customerexperience@stio.com.