Doesn't seem like the attachment for the back piece fits correctly with the base: there are two latches that need to be held out while sliding the back onto the tracks on the base and they are supposed to click securely into the base tracks, however ours are just a smidgen too small and won't latch. The back doesn't move around so we aren't worried about it unless you pull up on the back, but just beware that the construction is not very good as far as that is concerned. Otherwise, we love the look of chair, it is a little stiff to lock the foot rest back in, but the look and quiet glide and size are perfect for our needs which we had expected from other people's reviews. Overall we're happy.