VERY sturdy. VERY easy to assemble ... if the guys delivering it wouldn’t have banged-up one of the box-ends. I know a bit about bending metal back so I used 2 Claw hammers and put the momma back in shape. Like one of the postings said about box spring, mattress sliding on top, I put down some of that spongy shelving, cut it up & put it all over the top of the frame and NOTHING is moving.  Perfection!