while we were looking for a toilet trainer and finally chose this. After 10 weeks use by a straight 2-year-old broke the first plastic screw, thanks to Amazon's customer service kulantem we received a new chair. That was the end of March 2011 now 3 Plastic screws are again broken and the chair is suitable only for the bin. Why is it we do not know, just hit bad luck, bad chair, whatever ... we're just annoyed and can only advise. The plastic keeps normal children use not.