Nature Track by Petstages provides the best of the indoor and outdoor worlds. Fun track allows kitty to chase and bat ball in circles, while patch of faux-grass in the center is fun to rest on and satisfies kitty’s natural instincts. Most cats stay inside all of their lives, separated from the stimulating, engaging activities that are naturally available outside of the house. To help address your cat's instinctual needs, Invironment products offer a variety of natural materials, textures and activities to provide the Invironment that kitty craves, making them a safe and happy cat!