I bought this for my grandson's 3rd birthday and it was a big hit! His Daddy is putting it together (with Ayden's help!) and so far it is going smoothly. I like that it can go outside as well as inside. For now it will stay inside and he is looking forward to sharing it with his friends and his kitty cat, "Mr. Cat." It is one of my best purchases ever. I paid for expedited shipping only because I waited too long to order it and it was very prompt, coming exactly when promised. The product exceeds expectations!