When buying kids eyeglasses, you should pay enough attention to the materials of the lenses. From a latest science report, I learnt that the material fits kids most is Polycarbonate. It’s a very tough material. Kids are all very naughty, they run, and even fight with each other, so the polycarbonate lenses are just what they need. It’s your best choice, with it you’ll never be worried about your children’s eyes when they fall onto the ground, for such lenses can hardly be broken into pieces.