UA Storm1 technology repels water without reducing breathability. ColdGear® Infrared technology uses a soft, heat-conductive inner layer to absorb and maintain your body heat. Strategic synthetic insulation (180g body/140g sleeve) gives you more heat where you need it most. Insulation is light, waterproof and, most importantly, waterproof. Lightweight fabric provides excellent comfort and durability. Higher neck construction for greater coverage and heat retention. Safe zippered pockets and trinks. Elongated hem with adjustable drawstring for better coverage. Under Armour logo at front. Material: Nylon.