The technology behind Under Armour's diverse product assortment for men, women and youth is complex, but the program for reaping the benefits is simple: wear HeatGear when it's hot, ColdGear when it's cold, and AllSeasonGear between the extremes. UA Tech fabric is quick-drying, ultra-soft & has a more natural feel Material wicks sweat & dries fast Under Armour’s mission is to make all athletes better through passion, design and the relentless pursuit of innovation 100% Polyester