Klim Rogue Balaclava (BLACK) Minimal design using Windstopper&#174; and Coolmax&#174; fabrics allows the Rogue Balaclava to be extremely comfortable still offering the functional benefits of technical fabrics. Windstopper&#174; over-the-collar design stops cold air and weather from entering.Windstopper&#174; fabric.Coolmax&#174; breathable moisture-wicking fabric at top / side of head.Ergonomic patterning.Over-the-collar design prevents rain / snow from enterin