The No. 64 is the development code of the pimples used in producing this reversed rubber. Butterfly High Tension technology has enabled a fast dynamic rubber to be produced by utilizing the innovative Spring Sponge, enabling players to "grip" the ball and "catapult" the return back at high speed and with heavy spin. Tenergy 05 is recommended for playing close to the table.
Butterfly Tenergy 64 is for the attacker who plays for the offensive play in a middle distance.