"Weighing less than 2 ounces and folding into your pocket, this UPF50+ hat is the perfect on-trail companion. This hat has a sweat-wicking brim for the hottest days and a DWR finish for keeping the rain off your head, as well as a clever "Sunglass Lock" that holds your shades in place." — Runner's World This cap is light-weight, low-profile, and seriously ready for adventure. UPF 50+ sun protective, with bluesign® fabric with PFAS-free durable water repellent finish featured on the main body, mesh, and comfy wicking sweatband. With a simple adjustable sizing system, this hat is crushable and packs well without losing its shape. Sunglass Lock™ keeps glasses in place while the handy cutout in back makes this cap very ponytail-friendly. Features & Specs UPF 50+ sun rating (includes mesh) 2¾" crushable brim Sunglass Lock™ keeps glasses in place Reflective details Wicking sweatband PFAS-free durable water repellent finish bluesign® main body fabric, mesh, and sweatband Crushable design is travel-friendly US Patent 10,123,581 and patent pending Weight: 1.7 oz/48.2 g Fabric Content: 88% nylon, 12% polyester