Karl Lagerfeld KL6057S Sunglasses pair a squared acetate frame with photochromatic CR-39 lenses for adaptable light response. The black silhouette works for everyday wear and can be fitted with prescription lenses. Key attributes: Black | Grey | Acetate | Photochromatic lenses | CR-39 lens material | Compatible with prescription lenses | Squared/rectangular shape | Black frame | Dimensions & fit: Lens width: 52 mm | Bridge width: 19 mm | Temple length: 140 mm | Lens height: 41 mm | Composition & care: Acetate frame | CR-39 lenses