Under Armour Men's Camo HeatGear Liner 87% Polyester/13% Elastane Imported Under Armour mission is to make all athletes better through passion, design and the relentless pursuit of innovation Where we started? It all started with an idea to build a superior T-shirt Under Armour's assortment for men, women and youth is complex, but reaping the benefits is simple: wear HeatGear when it's hot, ColdGear when it's cold, and All Season Gear between the extremes