I was looking for something to entertain my cats during the day while I wasn't at home and when I came across the Bergan Turbo Track it was exactly what I was looking for. With this set you get several different pieces (2 hill pieces, 6 curve pieces, 1 straight piece) and a ball so that you can set it up in different ways. That way if your cat starts to lose interest in the Turbo Track you can take it apart and change it around. Not to mention you can also buy other Bergan Track sets and make a giant toy for your cat to play with. It kind of like a HotWheels set but for cats. My cats love their Bergan Turbo Track and play with it all the time. I'm really considering going out to buy them another set to make their's bigger. My only complaint with the Bergan Turbo Track is that it can be a little loud, especially at night while your trying to sleep, although it might just be my cats playing to rough with it. I would highly recommend this toy to any cat owner.