I want to say that this stool really a win for our daughter because it 1. straight and 2 very happy sitting on it. Her back is dardurch very relaxed and relieved because the stool much support. Still an advantage there because it hat no wheels (but you can buy by the manufacturer), you can place it on every floor and the ground has to not be afraid that he will be broken and the child can not unnecessarily play with it and injured it.