The chairs are lightweight, so you need to follow the instructions carefully!  I put the seat on the base backwards, only the front legs have a side to side brace,  with the chair on backwards, the first use resulted in a bent leg.  When I bent it back, the base bolt anchors were popping out. I figured out is was backward after asking for and getting a refund.  I called back and they could not cancel my refund. Also in both boxes the hardware pack plastic had torn and the hardware was strewn all over, but it was all there.