Main Features The rubber is vulcanized, the sponge is a dense demanding sponge, and a new adhesive is used between the sponge and the rubber Tower kind particle constitution design, making a soft and elastic feel, rubber sleeve prompt explosive power, instant off the board, flat arc, return ball is competitive Rubber is more appropriate for the circle and immediate assault play, but additionally enhance the speed of the ball The rubber is more viscous and easier to create a powerful spin Rubber is extra compatible for big balls and inorganic glue Specification: Material: Sponge, Rubber Color: Black,Red Type of Rubber: Reverse Rubber Package Included: 1pc *reverse rubber Note: Please allow an error of 1-2cm thanks to guide size Different computers reveal diversified colors, and the actual shade of the thing may be slightly diversified from the image Retail Box Safely in Bubble Bag