For colder conditions, the Dart XT Liner is designed to provide a balance of critical wicking performance with extra warmth, offering lightweight comfort for winter. This is the perfect next-to-skin layer for winter mountain conditions, using APEX THERMO fabric which offers quick-drying, moisture-wicking performance alongside a warm, brushed back for additional comfort. The low-profile seams, a precision fit and four-way stretch allow for easy layering and freedom of movement.