Yes.

The balls are inflated according to size not pressure.

1. Attach the inflater tip to the pump by screwing into place.
2. Before inflating, use a yardstick or tape measure to mark 75 cm on a wall or floor.
3. Inflate the ball to the mark, without over inflating.
4. With use, the ball will stretch a bit and can be further inflated.
5. Add more air as necessary, never inflating the ball larger than 75 cm in diameter.

Please note that a new ball will not be able to inflate to its full capacity initially. After a few hours, the ball will be more pliable and you can add more air at that time.