Nike Golf TW Ultra-Light Tour Cap Dri-FIT fabric helps keep you dry and comfortable Flexible brim, stretch fabric and VELCRO fastener at back for a custom fit Six-panel design for durability Microfiber front lining for a soft feel Fabric: Body: Dri-FIT 100% polyester. Lining: Dri-FIT 90% polyester/10% spandex.