Arc'teryx Atom SL

The Arc'teryx Atom SL Jacket is an ultralight, highly packable insulated layer designed for demanding outdoor efforts. Stretch synthetic insulation delivers focused warmth through the core, while uninsulated sleeves and stretch fleece side panels reduce bulk and improve ventilation.

Its breathable, weather-resistant construction, articulated patterning and adjustable hem provide dependable comfort and mobility in cold, wet conditions. It suits trail runners, hikers and mountain users who need versatile warmth beneath a waterproof shell or as a standalone layer.