Tennis Ball Pressurizer 4 Balls - TuboX4 29PSI + Pump Color:Default and a sturdy beechwood handle

and a sturdy beechwood handle

simulates slopes of up to 15% and adapts to all forms of exercise

Its tube equipped with a bite valve is 100 cm long so that it can be adapted to all body sizes

The anti-fog treatment

Fabric tongue and upper for good ventilation

Tennis Ball Pressurizer 4 Balls - TuboX4 29PSI + Pump Color:Default and a sturdy beechwood handleReinflate tennis balls after each game to extend their lifespan. How to use 1. Put the black elastic band around the tube. 2. Put up to 4 balls inside the tube. 3. Screw the tube 4. Lift the strap and use the pump to pressurise your balls (pressure approx. 2 bar). 5 . Remove the pump, lower the strap, screw the cap on. 6. Before reopening the tube to use your balls, it is important to remove the air from the tube: unscrew the cap and release the air