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. 100% Polyester.