Kuboraum Maske K5 is a sculptural, mask-style acetate eyeglass frame that balances bold design with everyday wearability. The K5 stands out for its square silhouette and full-rim construction, suited for statement optical use. Key attributes: Black | Matte black | Acetate | Prescription-ready | Complete frame construction | Square frame | Full-rim mask-style frame | Thick temples | Dimensions & fit: Lens width: 51 mm | Bridge width: 20 mm | Temple length: 145 mm | Unisex fit | Composition & care: Acetate | Wipe lenses with a microfiber cloth; clean frame with mild soap and water; avoid abrasive cleaners and solvents; store in a protective case.