NIKE Lady Racer Long Sleeve Running Top Nike Dri-FIT fabric - Wicks away moisture to help keep you dry and comfortable. Allover Mesh - With perforated panels at arms and back for excellent breathability and style. Longer Back Hem - For a fit that stays in place. Rib Crew-Neck - With interior taping for durability, designed for a comfortable fit. Ergonomic Flat Seams - Map the natural contours of your body to help reduce friction and chaffing while providing great range of motion.