XL537MIXSports sunglasses don't have to be thick to be protective. Check out these men's shades by X Loop featuring a semi rimless frame that gives the glasses a sleek and stylish look and feel. The frame is made of tough, molded plastic and is designed to handle the most rugged use. The arms flare and taper smoothly to the ear and feature the X Loop logo on the side. The lenses are mirrored, providing protection from the sun and other dangerous elements.