Do frequent players always worry about tennis balls leaking air and decreasing elasticity? Our tennis pressure tank was born for this! It is made of PET material, which can effectively prevent air leakage and maintain stable air pressure inside the tank. The unique design not only facilitates storage, but also protects the tennis ball from compression and deformation. The usage method is super simple. Put the tennis ball into a can, tighten the lid, and you can keep it fresh at any time. Whether it’s daily training or competitions, it allows you to use the same elasticity at any time