Test Men's insulation from Stio delivers warmth that packs small and layers easily. This collection features insulated jackets, vests, and hoodies you can wear as a midlayer under a shell or as an outer layer on cold, dry days. Insulation traps heat efficiently and compresses for storage, so these pieces fit in a pack for ski tours, fall hikes, and alpine starts. Lightweight styles suit high-output activity, while higher-loft options keep you warm at the trailhead or on the chairlift. Every piece is designed in Jackson, Wyoming, with a fit that works over baselayers and undershells. Pair your insulation with a men's shell for wind and wet-weather protection when conditions turn. Men's insulation from Stio delivers warmth that packs small and layers easily. This collection features insulated jackets, vests, and hoodies you can wear as a midlayer under a shell or as an outer layer on cold, dry days. Insulation traps heat efficiently and compresses for storage, so these pieces fit in a pack for ski tours, fall hikes, and alpine starts. Lightweight styles suit high-output activity, while higher-loft options keep you warm at the trailhead or on the chairlift.