Under Armour UA Coldgear Infrared 1/4 Zip Warm Up Jacket - Men's Regular: A slimmer athletic cut that delivers better mobility by eliminating the bulk of extra fabric Lightweight fleece fabric features a smoother exterior and a soft, warm interior ColdGear Infrared uses a soft, thermo-conductive inner coating to absorb and retain your own body heat Moisture Transport System wicks sweat away from the body Secure bicep media pocket