A midlayer for anything from ski tours to alpine ascents, the CoEfficient Hoody features Polartec Power Dry High Efficiency fleece with a gridded interior for increased wicking performance and added breathability. The under-the-helmet hood and full-length zipper let you regulate temperature on the go, so you dont find yourself overheating a half hour into the day. A slim cut helps the CoEfficient Hoody fit comfortably under your shell, and with a redsigned, trim fit, this layer takes up little space in your pack.