Description Product Details Warranty Information New Fogey US102-Crystal Tortoise: A classic style with spring hinges. Frame Material: Hand Made Acetate with spring hinges Fit: Medium 51 18 145 xx Comes with: Companion Case, Cleaning Cloth, 1oz. Eyeglass Cleaner Free Shipping (USA) Frame Size: Medium (49-52mm) Bridge Width: 18mm Temple Length: 145mm Color: Crystal Shape: Roundish Material: Acetate Style: Full-Rim Spring Hinge: Yes newOptions: true 30-Day No Hassle Guarantee