Jump Ropes CSI Cannon Sports, Play Sets & Playground Equipment, Sports & Outdoor Play, Toys & Games CSI Cannon Sports Polyester Jump Ropes with Wooden Handles Review by Locustard May 29, 2018 No Comments The CSI Cannon Sports jump rope features a polyester rope with smooth wooden handles for a nice easy grip. The polyester rope is 5/16-inch in diameter, so it is made to last no matter what surface you use it on.