The chairs are very sturdy. I like everything about them except for two problems: (1.) The backend of the armrests are supposed to slide up and down the frame when you fold/unfold the chair. That design makes the backend of the armrest want to slide down when you are using it. There is nothing on the frame to lock the armrests in position. (2.) The headrest portion that sticks up just flops over if you try to use it as a headrest. I wonder why it was made that high. If you are shorter, like me, you can scoot forwards and lay back to use the back as a headrest but your back will not have any support.