That's what we thought, but only one doorway in our house is suitable, and anyway, being upright with your feet on the floor and not mobile is apparently really frustrating - she'll bounce happily if we play football or interact with her, but if left on her own she tries to walk and, obviously, can't get anywhere. So we use it as a toy for a few minutes at a time, but it's no good for more than 15-20 minutes.