Description Product Details Warranty Information OnO C2310 Ocean: A unique and fun style with spring hinges. Premium quality! Frame Material: Hand Made Acetate with spring hinges Fit: Medium 51 17 149 41 Comes with: Companion Case, Cleaning Cloth, 1oz. Eyeglass Cleaner Free Shipping (USA) Frame Size: Medium (49-52mm) Bridge Width: 17mm Temple Length: 149mm Color: Blue Shape: Square Material: Acetate Style: Full-Rim Spring Hinge: Yes newOptions: true 30-Day No-Hassle Guarantee