I bought this for my 9 month old son when I noticed how much he loved playing with a box another Amazon item came in. As soon as we got it and popped it open, he IMMEDIATELY crawled through it, laughing the whole way! His only issue with it is that he somehow thinks he should be able to poke his head through the mesh "windows" in the tube -- a testament to their durability is that he hasn't yet, in spite of much trying. :) It is an awesome thing to play "peekaboo" in -- he finds it hilarious when I will crawl outside the tube from one end to the other while he sits inside.