After trying the Protac SenSit^® ball chair  a few times in occupational therapy treatment sessions, the boy says: "You have to tell my mother where to buy such a chair". The boy enjoys being hidden under the neck pillows; the side pieces are draped over him and he also wants to have a ball blanket over him in the meantime. When the parents see the pleasure that the chair brings, they try to create seating that is similar. The mother says, "we must own that chair”. Nothing else gives so much peace to our son."