Sferoflex SF1578 Optical Frame pairs a lightweight acetate construction with a butterfly silhouette for everyday prescription wear. The design balances style and practicality, accommodating prescription lenses with demo lenses included. Key attributes: Light blue | Violet | Acetate | Demo lenses included | Prescription-ready | Butterfly shape | Full rim | Dimensions & fit: Lens width: 53 mm or 55 mm | Bridge width: 16 mm | Temple length: 140 mm | Lens height: 41.3 mm | Available sizes: 53-16-140 and 55-16-140 | Composition & care: Acetate