Balenciaga BB0173O Optical Frame pairs a rounded acetate full-rim silhouette with a distinctive BB metal logo hinge for a refined, statement-making look. Designed for everyday prescription wear or fashion-forward styling. Key attributes: Black | Transparent | Acetate | Lightweight design | Prescription-ready | Demo lenses included | Round frame | Full-rim silhouette | BB metal logo hinge | Dimensions & fit: 51-19-140 | Composition & care: Acetate | Demo lenses (transparent) | Clean lenses with a microfiber cloth; store in protective case when not in use; avoid exposure to heat and harsh chemicals.