With the Penn-Plax Wheeled 35-in Sisal Cat Tree, your feline friend will enjoy spinning, scratching and climbing! This 2-in-1 cat tree and wheel is sure to keep your feline friend entertained for hours. The sturdy structure features sisal scratching posts, a 20" diameter wheel that's lined with sisal and carpet on the interior and exterior for a secure grip for running and scratching, plus it has removable plush resting pads!