Smooth, soft anti-pick, anti-pill fabric has a textured snag-free finish 4-way stretch material moves better in every direction Material wicks sweat & dries really fast Anti-odor technology prevents the growth of odor-causing microbes UPF 40 protects your skin from the sun's harmful rays Durable rib-knit collar Pen pocket on left sleeve UA just upgraded one of the best-selling polos in the world. The fabric is now lighter and more breathable to keep you even cooler and more focused.