This award winning circular system allows your indoor cat to soundly navigate the good outdoors… up down around and around and around. Your cats will never get enough! Designed to permit your cats the power to run uninterrupted to their hearts content with no need to forestall on the end of the enclosure turn around then run off again. The Kittywalk Grand Prix is great for either one cat or can comfortably accommodate two to a few cats happily together on the same time. Like all Kittywalk enclosures the Grand Prix may also be moved from place to position without harming the landscape.