Nike Dri-FIT Aerobill Featherlight cap ideal for running The light and cool Nike Dri-FIT Aerobill Featherlight cap (code DC3599-010) will reliably protect you while running. Thanks to the breathable design, you will stay cool. The nature-inspired look motivates you to soak up the joy of running and get outside. Nike AeroBill technology uses a patented lightweight construction with breathable fabric that's comfortable and sweat-wicking, so you won't be distracted. Perforations throughout the cap help keep you cool. You can adjust it with the belt at the back so that it fits well. Material: 100% polyester