Feature:1. Lightweight and portable, a comparable size and weight to an ordinary tennis ball storage container, the tennis ball saver is easy to take anywhere.2. When closing the lid, screw the bottle body to the pressure value of 14Psi and leave it for about 24 hours. The pressure of the tennis ball will be the same as that of the new ball.3. 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.4. Makes the perfect tennis gift, for yourself or someone special, the tennis ball saver makes the perfect addition to any tennis lover's gym bag.5. Quality construction, made of high quality fibrereinforced plastic material, wear resistant , sturdy and durable in use.Specification:Item Type: Tennis Ball SaverMaterial: Fibre-Reinforced PlasticColor: As shown in the pictureSize: Approx.7.3x20x8.5cm or 2.9x7.9x3.3inWeight: Approx.400g or 14.1ozApplicable Scenarios: Sports trends, other ball sportsTennis Accessories: Tennis pressure maintaining repairerProduct Use: Restore tennis shape.Package List:1 x Tennis Ball Saver1 x Gasket1 x Instruction ManualNote:1. Please allow 1and 8209 2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.