– This is Battle 2 National blue sponge version, which is the highest level in battle 2 series. It is manufactured using 729’s best and selected material, and supply to professional players.
– The Blue Sponge Battle 2 provincial rubber adopts the professional blue version sponge which has super strong inner energy, and better flexibility, faster speed. The explosive power, speed and control, and rotation complement each other to meet the training needs of any professional and high-level players.

• Hardness: 39/40

• Thickness: 2.1