Kuboraum Mask Z51 sunglasses pair the brand's signature mask-like, three-dimensional front with a layered metal construction. Designed as statement sunwear, they emphasize architectural geometry and sculptural presence. Key attributes: Gray | Rh | Metal | Full-rim frame | Acetate temple tips | Mask-style layered front | Rectangular/architectural silhouette | Geometric, three-dimensional detailing | Dimensions & fit: Lens width: 49 mm | Bridge: 21 mm | Temple length: 140 mm | Height: 45 mm | Frame width: 150 mm | Medium size | Composition & care: Metal | Acetate temple tips | Clean lenses with a microfiber cloth and mild lens cleaner; store in protective case when not in use; avoid abrasive cleaners and prolonged exposure to moisture.