This dog pen is made of electrophoresis metal panels and stakes, antirust and waterproof square tubes to ensure safe and long-term use no matter indoor or outdoor, and suitable for dogs, ducks, and rabbits. It is easy to set up with no tools required. You can set it up in a rectangle, square, or octagon shape. Features Creating different shapes: panels are connected by metal bars, which allow this dog playpen to be flexibly built in different shapes like octagons, squares, and rectangles in different sizes by adding or removing panels. You can purchase more sets to increase the playpen size. Well protected: the product is protected in several layers of wrapping materials and the package has passed 10 times drop tests to ensure the product is intact during the delivery. Safe & Secure: appropriate bar spacing and a latch on the door can keep your pets safe in the exercise pen. Rounded edges protect animals from injury, which also prevents causing damage to wood/pvc floors. Stakes not only connect the panels firmly but also anchor the panels to the grassland or soft ground. Practical pet playpen: it is a handy pet playpen that can be applied for both indoor and outdoor activities. You can use it to limit your pets’ exercise area or to separate different pets. 8 panels: each panel: 31.5 ''w x 40’’h Overall size (rectangle): 96'' l x 32'' w x 40'' h square enclosure dimensions: 65" l x 65" w x 40" h; square enclosure area: 29 sq. Ft.