Founded by former College of Maryland football player, Kevin Plank, Under Armor began with one simple mission: to make a T-shirt, which would regulate temperature, remove perspiration and enhance performance. Under Armour's performance apparel is designed to keep athletes cool during a game or workout. The technology the brand uses is complex but the results are simple and defined across several collection: HeatGear will keep you cool and dry, ColdGear helps keep you warm and dry and the AllSeasonGear collection ensures you stay dry, light and comfortable. This collection of men's Under Armor T-shirts includes styles from each of these collections in a variety colors and sleeve-lengths.