Nike Optical Frame combines a round, full-rim acetate build with a modern sport-inspired look, designed for everyday vision and comfortable wear. Key attributes: Crystal butterscotch | Clear | Acetate | Spring hinge | Round shape | Full rim | Dimensions & fit: Size: 50-19-145 | Lens width: 50 mm | Bridge width: 19 mm | Temple length: 145 mm | Lens height: 41 mm | Effective lens diameter (ED): 54.8 mm | Frame width: 119 mm | Medium fit | Size 50 | Composition & care: Acetate | Wipe clean with a microfiber cloth; avoid abrasive cleaners and excessive heat.