Under Armour ColdGear Running Hood Form-fitting - For a tighter fit which shapes to the contours of your body Signature Moisture Transport System - Wicks away sweat to maintain heat ventilation. ColdGear - It keeps you warm without weighing you down Double-Knit Fabric - Will keep you warm, dry, and light when the mercury drops Neck Gaiter - Converts to a neck gaiter, with a drop chin for full ventilation and added versatility