Jewelry Design Polygon Hair Claw by KOH MATSUURA Polygon is a hair claw designed for everyday hair styling. The shape and placement of the prongs differ from those of a standard hair claw, so more hair can be held. The prong shape and placement are protected by patents in the United States and Japan. The collection is made of aluminium, which lowers the weight compared with earlier metal claws. The lighter body stays in place longer and reduces the discomfort caused by heavy claws. The form was developed with computer-aided design, then made with rubber moulds and casting.