Fit and Design: One size fits most Unstructured for relaxed feel Curved bill to help block out the sun Perforated inserts for increased ventilation 6 panel design with contrasting color under visor Rubberized clip tag for durable adjustability Hook and loop fastener on strap for adjustability Heat-sealed Nike(R) graphics Technology: Dri-FIT technology wicks away moisture for long-lasting comfort Sweat-wicking Aerobill technology for added breathability Additional Details: Recommended care: Wash surface only