Kitty’s Choice by Petstages has four colorful balls for four different types of play! The first ball has a bell for sound, the second is catnip infused for an enticing scent, the third is made of plastic for everyday play, and the fourth is made of soft material for quiet nighttime play! Includes a track for kitty to chase balls in, and center caddy for storage when not in use. Non-skid pads on bottom ensure it stays in place.