Ultralight powerhouse weighs just 280g but delivers serious warmth for trail runs and alpine scrambles. Stretch insulation moves with you while staying breathable when you're pushing hard.
When you're pushing hard on mountain trails or scaling challenging routes, the Arc'teryx Atom SL Hoody delivers the perfect balance of warmth and breathability without weighing you down. At just 280g, this ultra-lightweight technical insulation layer packs down small enough to disappear in your pack until you need it, then deploys instantly to keep you comfortable during high-output activities in cold, wet conditions. The innovative Coreloft Stretch insulation moves with your body while trapping essential heat, while strategic Octa Fleece side panels provide crucial ventilation when you're working hard on the trail or rock face. Whether you're trail running through chilly morning mist, climbing in unpredictable alpine weather, or simply need a reliable everyday layer that performs when it counts, this hoody's fitted cut eliminates bulk for seamless layering while the PFAS-free DWR finish sheds light moisture naturally.
Features
Packable design for easy transport and storage
Coreloft™ Stretch insulation provides warmth while maintaining mobility
Octa® Fleece side panels enhance ventilation during high-output activities
FC0 PFAS-free DWR finish repels moisture without harmful chemicals
StormHood™ with low-profile design seals out drafts without bulk
Polygiene anti-odor technology extends wear between washes
Articulated patterning ensures complete freedom of movement
