Lighter than the original, Arcteryx's Atom SL Hoody for men is one of the most useful (and packable) pieces you can own. Wear it as a standalone layer when trail runs take you through cold, wet weather or layer it with a waterproof shell when mountain pursuits demand additional warmth and mobility. Breathable and weather-resistant, it has stretch insulation in the body but not the sleeves or hood — maximizing packability while still delivering focused warmth to your core. Updated with recycled Fortius Air 20 fabric, recycled stretch synthetic insulation, and FC0 DWR finish for improved mobility and a lower footprint. The new Octa fleece side panels provide ventilation and less micro shedding making the Atom SL Hoody for men a great companion for all your outdoor endeavors.