2 Panels Playpen: Sold in set of 2. Each dog playpen has 2 panels, they connect together with the long iron stakes to give your pet a decent area for playing and resting Indoor & Outdoor: This pet exercise barrier is perfect for both indoor and outdoor use. Your pet will have his/her paradise in the house and have a happy playground back in the yard or camping Heavy duty: The dog playpen is made of metal with a black coating. Recommend set this playpen on flat ground. The metal playpen is free-standing, however, if you have a naughty puppy, you might secure the playpen to the ground firmly for double safety Easy assembly: Dog fences are easy to set up within a few minutes under detailed instructions quickly and without difficulties. No tools are required Safe & Secure: Stakes not only connect the panels firmly but also secure the playpen in place