Native Itso Interchangeable Polarized Sunglasses (Silver Reflex, Gunmetal) Interchangeable Polarized Lenses: Optical quality interchangeable impact-resistant lenses block 100% of the harmful UV light and eliminate glare for sharp, clear vision with increased contrast and depth perception Rhyno-Tuff Air Frames: A proprietary high-performance thermoplastic material that is extremely lightweight, yet durable enough to withstand high-velocity collisions and temperature extremes Cushinol Nose Pads and Temple Boots: The proprietary composition of Cushinol creates a non-slip grip that keeps sunglasses in place during athletic activity Optimal fit for medium profiles Comes with extra SportFlex lenses, zippered hard case, microfiber soft case, and lens cleaning cloth