Gast Fen Sunglasses feature a handmade acetate frame with semi-flat nylon lenses, combining dependable UV protection with a modern geometric silhouette. Key attributes: Black | Acetate | 100% UVA/UVB protection | Anti-reflective inside coating | Five-barrel metal hinges | Includes premium hard case and microfiber cleaning cloth | Handmade acetate frame | Geometric full-rim silhouette | Semi-flat lens profile | Dimensions & fit: Lens width 50 mm | Bridge 20 mm | Temple length 145 mm | Size 50-20-145 | Composition & care: Acetate frame | Nylon lenses | Wipe lenses with the included microfiber cloth and store in the supplied hard case; avoid abrasive cleaners and excessive heat.