TRIPLE 21-Offensive Sponge (orange color) has a sponge hardness of 37.

The unique elastic top sheet of Triple is very powerful in its production of topspin shots with the 40mm ball. The special 21-Offensive sponge provides exceptional spin for powerful topspin shots with the 40mm ball especially when used with a faster blade like TSP BalsaFiber 8.5. TRIPLE 21 Offensive Sponge is designed to be the standard for use with 40mm ball in the years to come.

TSP Triple 21 TSP Triple 21 has the unique elastic top sheets of TRIPLE, that is very powerful in its production of topspin shots. The special 21 offensive orange sponge provides exceptional spin for powerful topspin shots and produces quick effective counter-drive shots in your play.

The TSP Triple 21 is good for intermediate level players.