The hybrid design combines mitten-level insulation with glove-like dexterity, so you get serious warmth without sacrificing the freedom to move. Cozy HeatLock(TM) fleece keeps hands warm without overheating, while strategically placed WindStop(TM) panels block icy gusts across your knuckles and fingertips. When the weather gets truly brutal, the zipper pocket fits a hand warmer for extra heat when you need it most.