The Callaway Performance Pro Golf Cap is designed to provide comfort and performance on the golf course, especially in warm weather. Moisture-Wicking Fabric: It's crafted from performance fabric, Nanotex (which is also stain-repelling), to actively wick away sweat and keep you dry. Cooling Sweatband: An integrated cooling sweatband helps to manage perspiration and keep you comfortable even on hot days. UV Protection: 30+ UV protection to shield your skin from harmful sun rays. The Performance Pro hat features an adjustable hook and loop closure to ensure a secure and customized fit for most head sizes. Structured Design: The cap generally has a structured, high-profile design, providing a classic and sporty look.