Midwest Homes for Pets' contour exercise pens are an excellent way to provide your pet with a play area or exercise while they're confined. Contour Ex Pens are made with your dog's safety, security, and comfort in mind. They are simple to assemble without the need for tools, and in addition to the slide bolt latch, they feature a safe and secure lift door system. The Contour Exercise Pens come with corner stabilisers and ground stakes for easy storage and folding down flat. A 16 square foot play area that is simple to set up. Safe and secure - No tools needed Ground stakes and corner stabilizers are included with the contour lift door and slide bolt latch.