Who knows what all these people are talking about. It took me a little under 20 minutes to put it together. Common sense goes a long ways these days but just like the people who voted for Obama a lot of people don't have common sense. They place biased reviews on products and then deter people from them. This thing is Rick solid our cats run and jump on it and play at the same time sturdy as can be. Tightened everything down by hand. No problem. Our cats are 5 and 6 months old and they are too small for the beds to give you an idea. So they should fit in them when they get older. Spend the money and you buy quality don't spend money and that exactly what you get bottom of the barrel.