The Warmest, Most Protective Helium Down Yet The Men's Helium XT Down Hoodie takes the proven performance of the Helium Down Hoodie and adds more warmth, more coverage, and more weather protection for demanding alpine environments. Designed for cold-weather mountain objectives, it combines high-loft 800+ fill power responsibly sourced down insulation with strategically placed waterproof overlays to deliver confidence when temperatures drop and conditions deteriorate. A bluesign® approved Toray 100% recycled nylon 20D ripstop shell provides lightweight durability, while increased down insulation delivers exceptional warmth for long days in the mountains. Toray Dermizax™ 2.75L waterproof overlays on the hood, shoulders, and other high-exposure areas help shield against snow, wind, and moisture where protection matters most. Added length and an expanded feature set provide increased coverage and comfort in harsh alpine conditions. With more loft, more weather protection, and more coverage than the Helium Down Hoodie, the Helium XT Down Hoodie is built for seriously cold temperatures, stormy mountain weather, and alpine pursuits where maximum warmth is essential.