Arc'teryx Atom Hoody

The Arc'teryx Atom Hoody is the versatile synthetic insulated jacket that answers the 'which layer do I take?' question. At its core is resilient Coreloft™ Compact 60 insulation, which retains warmth even when damp—making it a smarter choice than down for high-output mountain days. The lightweight Tyono™ 20 shell shrugs off wind and light moisture, while the soft 20D recycled nylon liner feels comfortable next to the skin.

Built for movement, the Atom features a fitted, articulated cut with stretch fleece side panels that dump heat when you're working hard, and an adjustable StormHood™ that seals in warmth without blocking your view. It performs as a standalone for chilly forest hikes, crag sessions, and camp hangs, or as a midlayer for touring and wet winter objectives. Packable, breathable, and protected with a PFAS-free DWR finish, it's a dependable companion across a wide range of conditions.