Wear indoors and out, in bright light or shade; photochromic convertible lenses darken in sunlight and lighten in low light Feature VLT rate of 33%-19% Convert from sunglasses to goggles and back again with quick-snap detachable strap 100% UVA and UVB ultraviolet protection from shatter-resistant polycarbonate lenses Durable, lightweight polycarbonate anti-impact frame is light, flexible and durable Removable closed-cell memory foam seals out wind and debris Carrying case and microfiber cleaning cloth included Accept prescription lenses (not included). GOGGLE/SUNGLS ROAD MASTER