Boss 1639/S Sunglasses combine a rectangular acetate front with metal temples and UV400 category 3 lenses, offering reliable sun protection for everyday city wear. Key attributes: Black | Dark grey | Acetate | UV400 protection | Category 3 filter | Acetate front | Metal temples | Standard plastic lenses | Rectangular frame | Base 4 spherical lens curvature | Dimensions & fit: Lens width: 52 mm | Bridge width: 20 mm | Temple length: 150 mm | Size M | Composition & care: Acetate (frame front) | Metal (temples) | Plastic (lenses)