A five-layer shelf, each layer is supported by 4 columns, it can bear heavy items by 70%. If someone pushes it hard, it will fall. Usage period is less than two months. Reason for selling: I didn't like its appearance in the room, and the colors are not coordinated. It has no defects other than what I mentioned. It is easy to assemble and doesn't take time. I assembled it when it arrived as soon as I woke up.