Carrera CA 4020/CS Optical Frame combines a lightweight polyamide construction with a magnetic polarized clip-on, offering versatile eyewear that converts quickly from prescription glasses to sunglasses. Key attributes: Black | Negro Mate | Polyamide | Polarized lenses | 100% UV protection | Lens filter category 3 | Removable magnetic sun clip-on | Compatible with prescription lenses | Includes protective case and microfiber cleaning cloth | Rectangular full-rim frame | Matte finish | Temples with ultem detail | Dimensions & fit: 56-16-140 | Composition & care: Polyamide (frame) | Ultem (temples) | CR-39 (lenses) | Clean lenses with the included microfiber cloth. Store in the supplied case. Avoid abrasive cleaners and high heat.