Sunwise Twister Black SunglassesSunwise Twister Black Sunglasses Interchangeable lenses for all weather conditions Yellow lenses (category 1) for low light. Orange lenses (category 2) for medium light. Smoke mirror lenses (category 3) for strong light. Light and comfortable Durable and secure Water resistant Impact resistant High optical clarity Wrap around style 100% protection against harmful ultraviolet rays (UVA&UVB) The polycarbonate frames are lightweight, robust, durable and