but the structure was using my daughter a "breeze". Additional tools were not necessary. According to assembly instructions, it would be possible to set up all alone the chair, but more on that but a hand was specially very usefulness in the case, my Daughter (6 years) for which the seat is intended, helped. Thanks to this help we managed also to build up in half an hour, (As promised in the manual). I had at the end are a few washers left, but the chair stands and holds. However, he is quite large for a starting school, and my daughter seems a bit lost in it. So rather something for older children?