The living world small tunnel is specially designed to attach to the living world small tent for small pets. It provides small animals with extended space for play and exploration. It can also be used as stand-alone play area for tunneling and burrowing. The polyester fabric makes a crinkly sound for added amusement when your pet moves through it. The tunnel can be used for indoor or outdoor use and it includes corner ties to secure to the ground. The small size is suitable for hamsters, gerbils, mice and rats.