Coyote Eyewear Riptide Polar Lite Polarized Sport Sunglasses Space age TR-90 frames are virtually unbreakable grilamid nylon Lightweight flexible resisilent and strong Premium quality polarized polycarbonate lens for maximum glare reduction ANSI Rated Z 80.3 impact resistant lens for sports Gray tint offers natural color transmission and a cooling view; Copper tint offers excellent contrast in wide range of lighting conditions; Rose tint enhances detail - flash mirrow for added visual comfort