EVIDENT Graviton Sunglasses are perfect for daily use to protect against the sun or enhance vision during low light conditions. The high quality plastic frame features crystal clear lenses and rubberized accents to improve comfort. The Gray lens is ideal for bright sunny conditions. The Amber lens improves contrast of greens and blues and is great in bright sunny conditions. The Yellow lens is intended for use in low light conditions at dawn and dusk. Each pair of Graviton Sunglasses includes a zippered case. All lenses CE Certified.