Description Product Details Warranty Information New Fogey US75-Tortoise 51M: The 'US' is for Ultra-cool Style. Classic with spring hinges. Frame Material: Hand Made Acetate with spring hinges Fit: Medium 51 17 140 30.8 Comes with: Companion Case, Cleaning Cloth, 1oz. Eyeglass Cleaner Free Shipping (USA) Frame Size: Medium (49-52mm) Bridge Width: 17mm Temple Length: 140mm Color: Tortoise Shape: Rectangle Material: Acetate Style: Full-Rim Spring Hinge: Yes newOptions: true 30-Day No Hassle Guarantee