The most vital piece of gear in your arsenal is closest to your skin. After reinventing the T-shirt, UA stepped up to make other shirts with the same unrivaled performance qualities, but cut specifically for layering. When you need an t-shirt that really works, you want one made UA strong. The Original series uses our unrivaled HeatGear® technology to wick the sweat away from your body. Then it dries quickly so you stay cool and comfortable all day. Add to that smooth, flatlock seams and anti-odor technology. What you've got is more than a t-shirt. You've got Under Armour®.