Police SPL771 0531 Sunglasses. Lens Width = 57mm. Nose Bridge Width = 17mm. Arm Length = 145mm. Sunglasses, Sunglasses Case, Cleaning Cloth and Care Instructions all Included. 100% Protection Against UVA & UVB Sunlight and Conform to British Standard EN 1836:2005 Police Spl771 0531 Sunglasses