Catit Design Senses Play Circuit Hagen Catit Design Senses Play Circuit incorporates your cat"s sight, sound and touch senses. Hagen Catit Design Senses Play Circuit is specially designed to entice, engage and entertain a cat while appealing to their natural hunting instincts. Hagen Catit Design Senses Play Circuit has four blue and white tracks with 2 ends which can be set to different layouts. Hagen Catit Design Senses Play Circuit have additional tracks that can be purchased to enlarge the setup. SwirlPatterned Ball PeekaBoo track Gray and green ball, specifically designed to attract cat"s attention PeekaBoo track design allows cat to see. chase and swat the ball