729 Rubber Battle Taichi with Duel-density Sponge

729 Battle Taichi is a new tacky rubber.  

The sponge come with this rubber is the innovative two-color and duel-density sponge.  It is called progressive structure sponge.

This combination have enabled table tennis enthusiasts to have a deeper and broader imagination about the sports.

the duel-density sponge hardness is 37-39 which means the sponge layer close to the top sheet is 37degree and the sponge layer close to the blade is 39 degree.