The P-BOX is a fully automatic, battery-operated tennis ball preservation system and guarantees permanently perfect ball quality. An intelligent control system with a mini compressor ensures that the balls are always stored under optimal ambient pressure. Simply fill the tube with 4 balls and switch it on, the P-BOX does the rest.

• Environmentally friendly, as tennis balls can be used longer
• Easy handling with just one switch
• Practical USB port for charging
• Space-saving and easy to transport
• Includes power supply
• Tennis balls not included