Sports sunglasses need to be tough and tight-fitting to keep your eyes safe when you are active, and these great shades by X-Loop do that and more. The frame is made of plastic, molded to fit tightly with a lightweight and durable construction that is tough and easy to wear. The arms start thick and taper with an extra panel, and the X-Loop logo is seen on the side in silver and black. The lenses are large rounded rectangles with a dark finish that blocks the sun.