Under Armour Men's The ColdGear Infrared Fleece Vest 100% Polyester Imported Brushed fleece is soft on both sides & delivers superior warmth Smooth Armour Fleece shoulder & side panels ColdGear Infrared technology uses a soft, thermo-conductive inner coating to absorb & retain your own body heat Material wicks sweat & dries really fast No true shoulder or side seams mean greater comfort