Staff observation: he suffers from severe motor unrest and has difficulties keeping calm and sitting still. Both his hands and feet tremble. Besides, he is often angry, noisy and externalizing. After trying the Protac MyFit^® ball vest his behaviour has changed drastically. After only 15 minutes, he is less angry, his body stops trembling and he sits quietly. He keeps wearing the ball vest all day. When asked about the ball vest, he answers that it is nice to wear. Everybody around him notices how much comfort and well-being, the ball vest gives him.