New with tags! Built for an ultra-comfortable fit and feel, while giving you the sweat-wicking, heat-battling, performance benefits you expect from Under Armour, our breathable polos come in all the classic colors. Please make sure you are 100% familiar with UA size chart. 95% Polyester, 5 % elastic Imported Machine Wash UA Siro fabric is super-light, dries incredibly fast & won't cling to you when you sweat Material wicks sweat & dries really fast Under Armour’s 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 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.