UA Tech™ is our original go-to training gear: Under Armour Men's Tech polos are loose, light, and keep you cool. Basically, they're built to be everything you need. Textured fabric that's soft, light & breathable. Material wicks sweat & dries really fast. 3-button placket. Self-fabric collar. Loose: Fuller cut for complete comfort. TALL Sizes: All tall sizes are 2”/ 5 cm longer than regular sizes. Sleeve lengths are adjusted proportionately depending on silhouette.