Description Product Details Warranty Information OnO C2309 Smoke Crystal: A new square style with a keyhole comfort bridge and spring hinges. Premium quality! Frame Material: Hand Made Acetate with spring hinges Fit: Medium 50 18 140 40 Comes with: Companion Case, Cleaning Cloth, 1oz. Eyeglass Cleaner Free Shipping (USA) Frame Size: Medium (49-52mm) Bridge Width: 18mm Temple Length: 140mm Color: Grey Shape: Square Material: Acetate Style: Full-Rim Spring Hinge: Yes newOptions: true 30-Day No-Hassle Guarantee