Description Product Details Warranty Information OnO C1210 Tortoise: A acetate round style with a keyhole bridge. Premium quality! Frame Material: Hand Made Acetate with spring hinges Fit: Medium 49 20 145 38 Comes with: Companion Case, Cleaning Cloth, 1oz. Eyeglass Cleaner Free Shipping (USA) Frame Size: Medium (49-52mm) Bridge Width: 20mm Color: Black and other Shape: Roundish Material: Acetate Style: Full-Rim Spring Hinge: Yes newOptions: true 30-Day No-Hassle Guarantee