Great for the price
Really easy to put together. The white fabric is not carpet but more like fuzzy blanket material, which is fine with me because my cat will totally shred carpet and the fibers get everywhere. As soon as I set it up, my cat started playing on it.
Two negatives:
1. The tube is basically pointless; it's only big enough for a kitten, so I just threw it out because otherwise it would take up too much of the middle platform to be used.
2. Item not as pictured. Only the two upper legs are sisal, the lower three are fabric, which is disappointing.
See pic for scale. I have a male, 10lbs cat.