Calvin Klein Round Sunglasses combine a classic round acetate frame with CR39 lenses for reliable sun protection and daily wear. The clean silhouette suits casual and refined looks while offering strong UV protection. Key attributes: Black | Nero | Acetate | UVA/UVB protection | CR39 lenses | Glare reduction, solar filter category 3 (black variant) | Includes protective case | Round frame | Classic acetate silhouette | Dimensions & fit: Caliber 51 mm | Composition & care: Acetate frame | CR39 lenses | Wipe lenses with a soft microfiber cloth and store in the included protective case; avoid abrasive cleaners.