Don't buy this. He doesn't stop, does somersaults and sometimes falls back. I have the right type of chair, but it doesn't work. The only reason it doesn't have a star is because it folds easily as advertised, but that's about all it's good for. It would be much better if there were support rods in the middle to keep it straight and not move. The ease of folding is useless if it doesn't do its job when unfolded.