Randolph Engineering Ranger Rx Sporter features a full frame construction with Monel eye wire for strength and a 3-position adjustable nosepiece for a range of shooting and viewing situations. This frame was designed to accommodate prescription lenses. In addition, there is an optional clip-on lenses available that provides a custom fit and exact color match to the frame. These clip-on lenses are 100% UV rated and come in twelve different shades. This frame is a 57mm size (the measurement of the widest part of the lens), 150mm lengths (the measurement of the earpiece from the front of the frame around the top of the ear to the bottom of the ear) and in Brushed Gold frame. This is a rugged, yet practical frame that could easily be used in a variety of hunting, fishing or shooting situations, or as an every day pair of prescription glasses. The Ranger Rx Sporter comes with frame, case and lens template for prescription use.