We bought this track for my son's 4th Birthday and he loves it. He's almost 5 and loves it more.Generally well put together. Falls apart all the time but is easy to put back together. Even a 4 year old can do it :).My only problem I can see is the button used to release the car and send it on its way tends to interfere with the cars located closest giving the cars on the ends an unfair advantage (we are all about fairness in this house). Also, the space from the starting barrier to the back of the track is not long enought for some of his longer cars. Not a big deal but worth mentioning.It's very portable and a very, very fun toy. We are constantly trying to find the fastest car. Race ya!