Kuboraum Z21 Optical Frame pairs a minimalist square silhouette with a matte black finish for refined everyday wear. Designed to complement any style, it delivers a decisive geometric look with handcrafted construction. Key attributes: Black matt | Bm black | Acetate and metal | Includes original case | Includes cleaning cloth | Certificate of authenticity and guarantee | Square frame | Full-rim construction | Matte finish | Geometric minimalist silhouette | Dimensions & fit: Lens width: 37 mm | Bridge: 30 mm | Temple length: 145 mm | One size (37-30-145 mm) | Composition & care: Acetate | Metal | CR-39 lenses | Wipe lenses with the included cleaning cloth; store in the supplied case.