BALL RESCUER: Tennis Ball Pressurizer Premium Kit - Converts Compatible Tennis Ball Container to a 30 psi Pressurizer & Extends Ball (includes Maintenance Kit, Compatible Container & Pump)Extended Ball Life Increase new tennis ball lifespan 10x or more with the Ball Rescuer. Ball Rescuer restores lost pressure in newer balls quickly and efficiently with 30 psi of pressure, double that of competing models in the market. We recommend starting with new set of balls and store them under pressure in the container with Ball Rescuer when not playing. Flat or worn out balls cannot be re pressurized. Premium This kit includes a Ball Rescuer, 2