Cat-Cat Scratching Posts-FOUR PAWS - KITY KAT GROOM & FUN TUNNELThe Four Paws Kitty Kat Groom & Fun Tunnel is a one-of-a-kind cat play ground and grooming center! The Kitty Kat Tunnel was created with multiple scratching zones to keep cats occupied for hours. Cats and kittens can play and scratch at the sisal roller wheel at one end of the tunnel or play at the outside center of the tunnel at the sisal roof-yes; it is sturdy so the pet can jump on the top and play! Assembles without any tools in minutes.