Jewelry, Eyewear and Watch Design Polygon Hair Claw by KOH MATSUURA Polygon hair claw is not the same hair claw as you see usual. Its unique shape of prong and placement enables it to catch the hair more than a normal hair claw. They got a patent for this unique prong shape and placement in U.S and Japan. This time they made its collection with aluminum which reduces the weight much more than the previous metal claw. Therefore it holds and stays longer also eases the pain from the weight claw has. Polygon hair claw is the first hair claw ever made with aluminum.