SmartyKat® Fringe Frenzy™ Cat Activity Tunnel with fringe, dangling ribbons, crinkle and open springy end entices cats to pounce, play, bat, and hide. This update on a favorite tunnel expands to 20 inches long. When cats run through the tunnel, a crinkling sound is produced, a proven attractant to cats, it sounds like prey scurrying through the grass and leaves. Satisfy your cat’s need for hunting with our easy to expand and collapse Fringe Frenzy™ Activity Tunnel.