Atom SV Hoody Men'sWarmest, thermo mapped Atom for cold, mid output mountain activities. When warmth is your priority, zip up the Atom SV Hoody. Made for frigid hikes and above the treeline adventures, its synthetic insulation and StormHood seal in heat for consistent comfort in cold, damp, and windy conditions. Strategically placed for max breathability, full length side panels provide a welcome flow of air on that final summit stretch. The workhorse in your winter