Catit Senses Speed Circuit attracts your cat s attention with a motion activated illuminated ball. The elevated tracks add a fast-paced exciting roller coaster element! Peek-A-Boo openings will allow your cat to excitedly chase and swat at the ball as it zips around the track. The illuminated ball allows for fun during the day or night! Wrap the Speed Circuit around other Senses products to complete the Sensory Activity Center for your pet! Contains 4 10 tube segments 2 end segments and 1 illuminated balls Part of the complete sensory activity center for cats