Great fitting glasses with photochromic lenses and compatibility with a prescription insertglasses are an import accessory to have on every ride whether theyre keeping the suns glare down and uv rays out or keeping the rain and dirt from going in your eyes you should always have a pair with youthe photochromic lenses delivers 100 uv protection and will adapt to the varying light levels to offer the right protection plus the orange tint will boost contrast in cloudy flat light the lenses