Under Armour Boy`s ColdGear Armour Printed Fitted Ninja Hoodie Ninja-style hood adds extra warmth when you need it...plus it's awesome Dual-layer ColdGear fabric has an ultra-warm, brushed interior and a slick, fast-drying exterior 4-way stretch fabrication allows greater mobility in any direction Moisture Transport System wicks sweat away from the body Anti-odor technology prevents the growth of odor causing microbes