You will need a pump to inflate your WaterART Fit Ball (you may purchase this with a ball or membership option).
Balls are shipped deflated, so you will need to use a spoon or a flat object to remove the white plug that seals the ball in order to inflate it.
Once removed, you will be able to put the end of the pump into the hole to inflate your ball by standing on the pump and pumping this up.
You simply connect the wider end of the tube to the blue end of the pump. Inflating your ball may take a little time so do be patient. Be sure to change legs to balance your muscles and rest when needed.
May be an added workout for your quads & glutes!