This is a very sturdy chair that converts from a chair to a stepladder easily and smoothly. I have wanted one for a long time and am very happy with it. The instructions could have been clearer, as I put one piece in backwards and had to take a lot of it apart to correct that. Apart from that, the assembly was not difficult, although holding the pieces in place to affix the seat benefitted from having another person to help. It was well-packed, arrived quickly, and I look forward to using it in a room that has high bookshelves.