I have the Pezziball few weeks ago ordered, because I have these met in a Wirbelsäulengymnasikgruppe and am convinced of the quality. The statement here that the Pezziball stinks is an understatement. I was really concerned when I noticed the smell when you open the package. Have the ball properly inflated to 90% and stored him for three days (day and night) with a locked carport. Then the smell was gone.