Arc'teryx Atom SL Jacket Men's

The Arc'teryx Atom SL Jacket delivers strategic warmth exactly where you need it most during high-output mountain pursuits. This ultralight synthetic insulation jacket features Coreloft Stretch insulation in the body core while leaving the sleeves uninsulated, creating the perfect balance of packable warmth and temperature regulation for trail runners and alpine enthusiasts. Breathable Octa fleece side panels enhance ventilation during intense climbs, while the weather-resistant Fortius Air 20 fabric with PFAS-free DWR finish sheds moisture when conditions turn nasty. At just 280g, it compresses down to nearly nothing in your pack, making it an essential piece for variable mountain weather where you need the flexibility to layer up or strip down as the trail demands.

Features

• Stretch synthetic insulation in body only for focused core warmth without sleeve bulk
• Compressible and packable design for easy transport and storage
• Breathable Octa fleece side panels for enhanced ventilation and freedom of movement
• Uninsulated mesh-lined sleeves prevent overheating while maintaining protection
• Adjustable low-profile StormHood for customizable head protection
• PFAS-free DWR water-repellent finish for eco-friendly weather resistance
• Hidden zipper hand pockets for secure storage
• Adjustable hem drawcord for personalized fit and wind protection
• Articulated patterning designed for active movement and mobility