Features: Using Butterfly's new "spring sponge" rubber. New technology can keep the ball on the racket longer. Combine this new explosive sponge with a new tensioned topsheet for maximum surface grip. The rubber creates a lot of spin on the serve and topspin. It is the fastest and most explosive rubber in the series without the use of any speed glue or tuning. Will maintain its speed throughout the life of the rubber without special handling. Specification: Material: Rubber Size: packaging: 19.0*17.5cm, rubber: 17*16.5cm Color: red, black Package Includes: 1*T64 butterfly table tennis rubber Notes: Please allow minor errors due to manual measurement. The colors may be a little difference for the different monitor display.