Each of the four we purchased have broken over the course of the time we've had them.  There appears to be a significant design flaw under the seat in which any weight shifts from side to side cause the support bracket(s) to break.  We've repaired them multiple times but it keeps happening.  We are not heavy people... my wife is 110 and I'm 160 - it's happened to each of us.  

They look nice and are comfortable but I wouldn't recommend these stools whatsoever.  Beyond the warranty period nothing can be done about it, either, the purchaser (me) is just SOL.  REALLY FRUSTRATING!!