Sferoflex SF2298 Optical Frame is a metal, full-rim square design from Sferoflex that pairs classic styling with the brand's flexible hinge for a comfortable everyday prescription fit. Key attributes: Gray | Argento | Metal | Progressive lens compatible | Durable metal construction | Patented flexible hinge for adaptive fit | Silicone adjustable nose pads | Includes protective case and cleaning cloth | Demo lenses installed (prescription lenses optional) | Square shape | Full rim | Single bridge | Dimensions & fit: Lens width: 55 mm | Bridge width: 17 mm | Lens height: 45.4 mm | Temple length: 140 mm | Size: 55-17 | One size | Composition & care: Metal | Silicone | Wipe lenses with the included microfiber cloth and store in the supplied case.