【Composition】 · Resin part: split by adding tensile force. Construction conscious of being caught. · Pimp part: A braided cord with no stretch that is connected between the resin part and the metal part. Metal part: Connect silicone rubber part and string part. - Silicone rubber part: A loop with elasticity. You can go through the crown glasses and hook it. 【Features】 · Even if the holes of the eyeglasses are not open, it is possible to fix the eyeglasses simply by passing the ring of silicone rubber. It can also be used for Orkley sunglasses for sports and safety glasses.