The Nike Club Speed Pinnie features lightweight mesh and sweat-wicking technology to help you stay cool, dry and comfortable. The racerback straps on the back let you move freely during gameplay, while allowing quick and easy reversal without removing your goggles. This product is made with 100% recycled polyester fibers. Nike Dri-FIT technology moves sweat away from your skin for quicker evaporation, helping you stay dry and comfortable. The reversible design is perfect for practice or game time. 100% polyester