Features : • UA Microthread technology in the fabric dries faster, won't cling to you, won't chafe & stretches without absorbing sweat • Signature Moisture Transport System wicks sweat to keep you dry & light • Lightweight, 4-way stretch construction improves mobility & maintains shape • Ergonomic flatlock seams allow you to move free without fear of chafing • Shaped hem delivers enhanced coverage without looking big & bulky • Classic racer back unlocks amazing range of motion • Reflective logos deliver greater visibility on low-light runs • Polyester/Elastane