High quality lens, effectively waterproof and shock proof, prevent saliva droplets, avoid splashing on the eyes and skin, effectively protect the eyes, safe travel. High quality hinge, open and close smoothly, quality assurance, open and close for many times will not appear damage. Fine polishing, fitting the bridge of the nose so that the bridge will not be compressed wear. Lean radian completely not stuck ears, wear comfort. Comfortable and soft frame, light and not off. 6 5/16''L X 2 3/8''W