When the temperature drops, ditch the bulk and reach for the PRO Alpha Layer. Worn under your favorite shell, this innovative midlayer will keep you warm without overheating. Premium Polartec® Alpha Direct® fabric transfers moisture with breakaway speed, keeping you dry and comfortable throughout an wide temperature range. Three bellowed rear pockets hold ride essentials securely under an jacket and allow this top to stand on its own when you want to stash your shell on an long climb.