The Catit Design Senses Speed Circuit incorporates sight, sound and touch, and moves speed to a higher level with its accelerating coaster ramps. The elevated tracks add a fast-paced exciting roller coaster element while the motion activated illuminated ball adds a further level of fun and interactivity. Cat senses are unique; they see and hear sights and sounds that are beyond our understanding, and with their sense of taste, touch and smell they experience the world in ways we can only imagine. The line of Catit Design Senses products was developed with your cat in mind, designed to appeal to all of your cat's senses. The Catit Design Senses Speed Circuit includes elevated peek-a-boo tracks and a motion activated illuminating ball.