larger - diameter 30 cm, longer - 130 cm: the cat tunnel is an improved version, resolved the problem that the big cat could not enter the small tunnel Design with two holes and in S: it is more interesting than the other tunnels without holes, and this tunnel is more exploratory than the others. Easy to fold and use: opens and folds in a few seconds, with a loop on the side, it is easier to transport or store Interaction: you can interact with your cats and make them feel the owner’s company Stable structure: steel structure and nylon fabric for a long lifespan.