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

• Environmentally friendly because tennis balls can be used longer
• Easy to use with just one switch
• Convenient USB port for charging
• Space-saving and easy to transport
• Including power supply
• Tennis balls not included