Flex-e Fun-nel is the ultimate ferret exerciser. Flex-e Fun-nel stretches into 8 feet of tunneling fun for your favorite furry friend. Use a Ferretrail connector ring (sold separately in Ferret Fun-nel Maze), to connect two Flex-e Fun-nels to each other. Flex-e Fun-nels attach directly to FerreTrail tubes and elbows creating a playground system for ferrets and other pets. Giving your pet access into and out of their home.