The cat tower took about an hour to put together. Not bad considering how many parts there are to it. Our cats are full grown and fit just fine in it. But there are some smaller parts kittens would get a better use out of. The scratching posts have held up so far but they are on the skinny side and I worry the cats will tear through it eventually. All in all it wasn’t a bad buy for the price. The color is really nice and the cats have barely left it since I put it together so it’s definitely cat approved.