Hamster wheels can be a bit depressing since the little critters never go anywhere despite how much they run, but the Hamster Racer Set now lets pets stay fit and move around.
The Hamster Racer Set is a much better option than the regular wheel for your little critter. It's basically the same thing but is attached to a miniature car. Think of it as a treadmill, except that it allows the hamster to go everywhere. The wheel is detachable as well, so if you don't want the little guy/girl running around the house, then it can function as a regular exercise wheel.
The Hamster Racer Set is a great way to keep track of your critter while allowing him/her to engage in a healthy exercise outside the cage.