When I purchased this, in the description it said it was made of wood, didn't specify it was particle board. I was pretty bummed about that but it technically "wood". It does feel sturdy and hardware didn't seem cheap or easily breakable. I stood on it and it didn't budge at all, which was nice(110lbs) My cats took a little getting used to it at first, and honestly I think they're a little big to comfortably go in there. But for now they're going in to do their business.  Might use as a tv stand.