1. Tennis Pressure Tank is Lightweight and Portable, Tennis Ball Maintaining Cans with Comparable Size and Weight to an Ordinary Tennis Ball Storage Container, the Tennis Ball Saver is Easy to Use. Ball Container Pressure Jar Suitable for Most Sports Bags, Storage Box Sports Jar is Suit for People Who Like Playing Tennis and is Conveniently Carry Anywhere. 2. When Closing the Ball Container Pressure Jar Lid, Screw the Bottle Body to the Pressure Value of 14Psi and Leave the Tennis Shape Restore Jar for a While. the Pressure of the Tennis Ball Will Restore Bouncing and Will Be the Same Fresh As That of the Ball. 3. Keep Tennis Balls Bounce and Elastic, That is a One of a Kind Tennis Ball Storage System That Holds Balls Under Equal Internal and External Pressures Preventing Air from Seeping in and out of Pores Use for Tennis Protection, Ball Pressure Canister, Pressurized Tennis Ball, Sports Ball Repair, Tennis Ball Container Pressure, Sports Tennis Pressure Repair, Tennis Shape Restore and Outdoor Exercise Sport Supplies. 4. Tennis Ball Pressurizer Makes the Perfect Tennis Gift, Pressure Maintaining Repairing Storage Can S for Yourself or Someone Special, the Tennis Ball Protector Compressor Makes the Perfect Addition to Any Tennis Lover's Gym Sports Bag to Carry. 5. Storage Bottle Box Made of High Quality Fibre-reinforced Plastic Material, Endurance, Sturdy and Durable in Use for Tennis Ball Protector Compressor, Paddle Ball Decompressor, Ball Pressurizer, Ball Pressure Canister, Pressure Jar Storage Box, Tennis Ball Container, Tennis Shape Restore, Pressure Maintaining Repairing Container, Etc. Color: Black Material: plastic Package Contents: 1 * Tennis Ball Saver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/-