Soft, textured microfleece traps heat for superior warmth UA Cold Gear Infrared lining uses a soft, thermo-conductive inner coating to absorb & retain body heat Air Vent panels deliver superior ventilation where you need it most Signature Moisture Transport System wicks sweat to keep you dry & light Generous 3-piece high collar scuba hood with binding detail Thumbholes keep sleeves secure & help seal in your body heat Shaped high/low hem offers superior back coverage without sacrificing mobility Side seam secure zip hand pockets Elastic binding at sleeves & hem