Under Armour Mens Heatgear Flyweight Run Singlet, Volcano/Graphite/Light/Pastel Orange, M Ultra-light, smooth fabric provides extreme comfort and performance - without adding weight Printed, blown-out mesh back provides superior breathability where you need it most Anti-odor technology 50+ UPF protects your skin from the sun's harmful rays Reflective UA logo and word mark boosts visibility and safety during lowlight runs 100% polyester