Description Product Details Warranty Information Sierra 537 Gunmetal: A understated style for men in a shape that suits most face types. Frame Material: Metal with Spring Hinges Fit: Medium 52 18 140 xx Comes with: Companion Case, Cleaning Cloth, 1oz. Eyeglass Cleaner Free Shipping (USA) Frame Size: Medium (49-52mm) Color: Gun Shape: Rectangle Material: Metal Style: Full-Rim Spring Hinge: Yes newOptions: true 30 Day No Hassle Guarantee