The ultimate versatility layer for skiers, alpinists, and climbers, the men's Konseal Zip Neck by Arc'teryx perform as a midlayer or standalone in the backcountry. It's made from air-permeable Polartec Power Dry fleece with a voided grid construction, delivering a high warmth to weight ratio. The smooth outer surface that helps wick, dry moisture, and layers easily under your shell jacket. The articulated trim fit moves with your body. The high zip neck collar provides warmth and quickly ventilates excess heat.