1Made of super tear resistant polyester, it is wrapped around a spring steel frame to keep the cat safe. 2Fold up in seconds for easy storage and travel, can expand to about 24.5cm/9.4in, pets can enjoy the game anytime. 3Toys make a sound to stimulate curiosity, easily attract your cats attention. 4Keep your pet active even when you're not at home. It's both a game and exercise to keep your pet healthy. 5Fit for cat, dog, kitten, rabbit or other animals to play, can be used both outdoor and indoor, meet your different needs.