UPF 50+ sun protective, with bluesign® certified fabric with PFC-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. Specs UPF 50+ sun rating (includes mesh) 2¾"" crushable brim Sunglass Lock™ keeps glasses in place Reflective details Wicking sweatband PFC-free durable water repellent finish bluesign® certified 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