A simple adjustable sizing system helps it fit just right and crushable packability so you can take it anywhere. Made using bluesign® certified fabric with a PFC-free water repellent finish on the main body, mesh, and wicking sweatband, Sunglass Lock™ keeps glasses in place when not on your face. 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 Adjustable chinstrap Adjustable sizing bluesign® certified main body fabric, mesh, and sweatband Crushable design is travel-friendly US Patent 10,123,581 and patent pending Weight: 2.7 oz/76.5 g Fabric Content: 88% nylon, 12% polyester