This pet playpen is made of premium iron with a black finish, which ensures a long life span. This pet fence creates an enclosed area with an open top for pets to play and exercise. You can use this pet playpen to limit your pets’ exercise area or to separate him/her from different pets. It is ideal for small animals like puppies, rabbits, ducks, guinea pig, bunny, and kitten, perfect for both indoor and outdoor use. Panels are connected by metal stakes, which allow this dog playpen to be flexibly built in different shapes like octagon, square, and rectangle in different sizes by adding or removing panels.