The Nike Featherlight Tennis Cap is made with mesh vents and sweat-wicking fabric for minimal distractions on the court, with a black underbill for reduced glare. Benefits Dri-Fit fabric to wick away sweat and help keep you dry and comfortable. Mesh panels for optimal breathability. Black underbill and binding minimize visual glare. Adjustable back closure for a customized fit Fabric: Body/bill: Dri-FIT 100% polyester woven. Sweatband: Dri-FIT 90% polyester/10% spandex.Hand wash