X-Loop has designed many different sunglasses, and occasionally it will make a hybrid pair that looks as cool as it feels. These great frames for men are made of metal and have an aviator-meets-sports-glasses look and feel. The frame is durable and flexible with a lightweight construction and a shape that is made to fit. The plastic arms are thin with the X-Loop logo along the bottom. The lenses are rectangular and dark to protect your eyes and your privacy.