In offer jungle gym balls, it was not easy to find "the right", but in the end I decided it for the original and this for the "Rolls Royce" among them: anti-burst, repairable in case.
As repeatedly described in other offerings, smells slightly of vanilla this ball, what I find enjoyable.
Depending on where you kept the ball in between, you have to use feel a home fragrance that is not overpowering though and safely fades after some time - everything is better than u Plasik having to smell pure chemistry..
In order to take it in use can (read: to bring to the right size), I stuck to the accompanying description and the advice of my therapist, so it took 3 days until I had inflated him accordingly (with a foot pump, as they are also used for air mattresses).
Getting used to, however, was: during inflation there is no "return hedged" use the ball so introduced air escapes again as soon as times the nozzle away - you should therefore equal to pull the trigger with your finger and insert the plug as soon as possible.
I think if you handle it gentle on the material, it has certainly not only delight in the part but also a long time of great benefit to his health.