The Callaway Tour Authentic Performance Pro Golf Hat is constructed with FLEXFIT 110 technology providing ultimate comfort on the course. The moisture-wicking fabric keeps you cool and dry, while the velcro closure lets you find the perfect fit. It's 30+ UV protective properties help keep you protected in the harsh summer elements. Callaway Tour Authentic Performance Pro Elyte Golf Hat - Features: FLEXFIT 110 Technology NANOTEX stain resistant technology Moisture-wicking and quick-drying Callaway Elyte logo on side Adjustable velcro closure Cooling Sweatband 30+ UV Protection One size fits most Authorised Callaway Retailer