Inflating a gym ball with your pump
"Fully inflate your gym ball using a tape measure to check the diameter. Here are the maximum diameters of our different gym balls:
- size 1 = 55 cm,
- size 2 = 65 cm,
- size 3 = 75 cm. Finally, sit on the ball and check that your knees are at hip level. If not, adjust the inflation level accordingly.
You can also use the pump to inflate your soft ball or textile instability cushion.