Callaway Chev Tour Sunglasses Stainless alloy frame material for superior strength, while TR90 temples provide comfort. Ergonomically wrapped design for full ocular coverage supplying excellent protection from the elements. Silicon rubber nose pads for secure non slip fit. Neox NX9 lens for superior visual acuity and protection. NX9 is a darker lens with gradient mirror allowing only 9% light transmission. Features Callaway Chev Tour Sunglasses 8226 Stainless alloy frame for superior strength. 8226 Ergonomically wrapped design for full ocular coverage. 8226 Silicon rubber nose pads for secure non slip fit . 8226 Next generation Neox NX9 lens for superior visual acuity and protection.