Tennis balls are made with an internal pressure of 14 PSI and packaged in a pressurized can. Pressure is released when you open the can. Once this occurs pressure inside the ball will now escape through it’s porous rubber. During play each time you hit the ball it will force the internal pressure even more.
Our Restore Ball Pressuriser increases the lifespan of used tennis balls saving time and money. The tube holds 3 balls and compresses air up to 14 PSI to bring used balls back to their original bounce. For maximum effectiveness -keep in bag and store used balls that are in good condition in tube immediately after play. Supplied with spare O-ring.
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