Creative DesignThe tunnel can be unzipped as well, if your critter was too big for it, then its a longish rectangle that you could rig up as a hammock or bridge or something. If youre creative enough you can find a use for it Comfortable MaterialHamster Tunnels made of cozy soft fleece material,the outer short fleece is not easy to stain ashes, and the inner long fleece is comfortable and warm,provide a secure comfy resting spot for your lovely one,offers unmatches warmth and comfort Appropriate sizeThe long tunnel 31.5"x3.94"x3.94"(increased the diameter),suitable for guinea pig, chinchilla, ferrets, rats, gerbil, hamster, mouse and other small animals(note: not suitable for oversized small animal such as ferrets) Easy to UseHamster tunnel has the potential to hanging (included clips) They are easy to use clips that can be clipped on a variety of wire type cages Machine wash/hand washIt's very easy to clean and maintain as you can unclip it from the cage and turn it inside out for washing, air dry is best and then you can clip them back once dried