Native Eyewear Trango Interchangeable Polarized Sunglasses 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 to large profiles Comes with extra SportFlex lenses, zippered hard case, microfiber soft case, and lens cleaning cloth