Mission Adventure Hat is the hat you'll want with you from the beach to the boat to the trail - and everything in between. Made with UPF 50 fabric that helps block 98% of the sun's harmful UV rays while shielding your head, neck and face from sunburn. The PermaStraw brim is constructed with flexible and crushable faux straw that is 100% water-proof. Plus this hat is powered by HydroActive cooling technology to keep you cool and comfortable in the heat. In under 30 seconds the Mission Adventure Hat cools to 30 degrees below average body temperature in 3 easy steps: Wet it, Wring it out and Wave it. For optimum comfort and function, there is an adjustable elastic chin cord for a customizable fit. Mission products are made of proprietary performance fabric with cooling technology that is activated by water and provide chemical-free cooling that is always reusable and washable. Features: HydroActive cooling technology Made with UPF 50 fabric Block 98% of the sun's harmful UV rays PermaStraw brim is constructed with flexible and crushable faux straw that is 100% water-proof Adventure Hat cools to 30 degrees below average body temperature Specificatons: One Size Fits Most Brim: 2.5 inches Minimum Size: 24 inches Maximum Size: 24 inches Country of Origin: Imported Mission Cooling Sun Adventure Hat - Olive