This was such a good choice! It came a day earlier than expected, it was put together in 15 minutes, there was no glue smell, it is sturdy and the price was fantastic. My cat, who is about 13 lbs, viewed it with a bit of suspicion at first, but eventually worked his way from the bottom to the top. He doesn't care about the IQ box at the bottom yet, but I'm hoping he will start playing with it because it seems like such a good toy.