Super Spinpips 21 has the same unique top sheet as the Super Spinpips, but is combined with the more elastic TSP-21 offensive sponge. TSP claims that this short effective pimple provides excellent speed and an amazing long pimple effect with great capabilities for producing powerful topspin! This improved version will supply improved speed due to the elastic sponge. Suitable for power blockers and snappy counter hitters who play close over the table. Supposedly used by Chen Longcan