Alpine proved as a mid-layer and standalone, Arcteryxs versatile Atom Hoody has warmed climbers and backcountry travelers for years. Built to handle a range of conditions and output levels, the latest-generation Atoms Coreloft Compact insulation retains its warmth even if wet and has loft retention to withstand years of packing and unpacking. The water-resistant Tyono 20 face fabric is breathable and durable, stretch side panels improve fit and freedom, and the insulated StormHood adds warmth.