The bookcase seems sturdy enough once built, but the instructions left out a pretty important step, which meant we had to un-build it after we realized what happened and then re-build it. WayFair had great customer service, though, once we let them know about the problem. After 3 weeks, we haven't had any trouble.

The step that was overlooked was putting in the fixed (not flexible) shelf. That should have happened before or while you were attaching the sides to the top and bottom.

Pros: Looks good, great finish
Cons: Difficult to assemble.