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. Dropped hem for enhanced coverage. UA Siro has a unique construction that's super light, dries incredibly fast & won't cling to you. Textured knit gives it a stand out look & stealth ventilation. Anti-odor technology is a superlative innovation which helps prevents odor.