ARC'TERYX Proton Hybrid Hoody X000006731 BLACK SMALL New, unused. Color is BLACK, size is S. Purchased from an authorized brand store, and a shopping bag will be included. Uphill, traverses, transitions, and downhill – things aren't always straightforward in the backcountry. You need to stay comfortable despite constantly changing exertion levels, temperatures, and conditions. To meet this reality, the Proton Hybrid Coreloft™ Compact insulation and Fortius Air 50 fabric strike the perfect balance of warmth, breathability, and vapor release. GORE-TEX INFINIUM™ panels on the yoke and hood provide wind protection where you need it, repelling light snow and sleet. This versatile and comfortable jacket is a reliable piece for backcountry adventures.