We bought this to fit behind the front seats of our car. By the dimensions on the web site, I thought it was going to be a little long, but it fits perfectly as the base is slightly shorter than the top. That being said, upon arrival, my wife wanted to return it immediately as the interior dimensions are so small - 4.25 x 17.25 and smaller at the base. If this hadn't been bought sight unseen, then we would have bought something else. It does do a good job at keeping things cool throughout the day.