This interactive cat toy is designed with 3 levels of tracks and 3 brightly colored moving balls to attract kitty’s attention! Your cat will adore batting, swatting, and pouncing the bright colored balls as they engage their natural instincts to hunt.Great for single & multiple cat households.A small safety bar across the top central opening keeps overly curious kitties from getting stuck while playing with this track toy.Durable plastic and a NINA OTTOSSONn-slip base hold the Tower of Tracks in place during vigorous play.