Compared with paper materials used by other sellers on the market, our cat tunnel is made up of Oxford fabric, which turns out to be tough, strong and durable. One of the most outstanding features of this product is that it is possessed of three-way channels that can be well extended. Besides three-way channels that can make your cat to have more ways to have fun, we also provide drop balls and peep holes for your cat to have extra recreational activities. Each tube is about 60cm/23.5 inches long and 28cm/11inches deep. In any case, it can be folded down in a few seconds just for easy storage. The cat tunnel and tube for indoors has a wide range of application, it is not only used for kittens or cats, but also it is suitable for puppies, rabbits, weasels and marmots and more.