The Columbia W Trail Dryer has the most innovative technology all wrapped in one cap. It is your go-to for any outdoor activity. Omni-Shade Sun Protection technology helps block damaging UV rays from reaching your skin, allowing for more carefree hours in the sun. UPF 50 sun protection. Omni-Freeze ZERO fabrication reacts with your sweat to lower the temperature of the material for an all day cool. Omni-Wick Advanced Evaporation technology moves and disperses sweat away from the body to keep you comfortable during physical activity. Hook and loop adjustment for a perfect fit. Hand wash cold. 86% polyester, 14% elastane. Imported. Measurements: ; Circumference: 21 in ; Brim: 2 3 4 in ; Product measurements were taken using size One Size (6 5/8-7 3/4). Please note that measurements may vary by size.