Arc'teryx Atom Vest

The Atom Vest pairs the proven warmth of the Atom family with the freedom and packability of a sleeveless design. Its Coreloft Compact 60 synthetic insulation delivers breathable, resilient warmth that keeps performing even if caught in light damp weather, while the air-permeable Tyono 20 shell and soft 20D recycled nylon liner balance protection with next-to-skin comfort. Articulated patterning and performance stretch fleece side panels allow unrestricted movement and vent heat during high-output effort, making it a smarter choice than down for active days.