We built this warm, lightweight layer to dial in comfort through all four seasons of mountain action. The interior’s raised grid design made with Polartec® Power Grid™ fleece increases breathability and keeps volume down, trapping heat when it's needed and letting it out when it's not. Rapid moisture wicking keeps you dry and comfortable with stretch integrated into the fabric to move with your full range of motion. The streamlined hood adds more options for warmth, with elastic that prevents it from slipping while on the move. Flatlock seams ease layering and thumbholes keep sleeves in place. A concealed zipper pocket on the lower hem stashes small essentials.