Vibrant Life Small Animal Metal Wire Foldable Playpen, Black, 10" x 9", 10 Panels Includes 10 panels measuring 10" W x 9" H to create a 31-inch diameter play area Durable, waterproof metal construction for indoor and outdoor use Tool-free setup makes it quick and easy to assemble Foldable design allows for easy storage and portability Ideal for hamsters, gerbils, mice, and other small pets Encourages healthy play and exercise in a safe environment