The Arc'teryx Atom SL Hoody delivers precisely what active women need when the mountains serve up cold, wet conditions and demanding terrain. This packable insulation layer strategically places Coreloft™ Stretch insulation only in your core while leaving arms uninsulated with mesh lining, preventing overheating during high-output trail runs and alpine climbs while keeping your torso warm when you need it most. The stretch Fortius™ Air 20 face fabric moves with you through technical terrain, while breathable Octa® fleece side panels enhance ventilation exactly where you generate the most heat. Whether you're pushing pace on a chilly morning run or layering under a shell for serious mountain pursuits, this fitted women's insulated jacket compresses down small enough to disappear in your pack until conditions change. It's the kind of versatile mid-layer that transforms from essential trail running gear to reliable alpine climbing insulation, making it one of those pieces you'll reach for again and again when the weather gets interesting.
