● Heavy-Duty Dog Playpen: Constructed with heavy-duty metal material, the pet dog playpen is sturdy and durable enough for your long-time use. And it is rust-proof and weather resistant, providing a comfortable and safe exercise pen perfect for safely restricting your furry friends especially for outdoor use.● Changeable Shape: The 8 panels are connected and secured together with sturdy ground stakes to keep the playpen in place. And these panels can also be rearranged into multiple shapes to match your space, such as a square, octagon, rectangle, 2 small squares and a divider fence.● Added Secure Design: This dog exercise pen confines your pets in the exact place to ensure safety. Besides, its round edges keep your pet safe and away from scratching or injured. Door with double locks well makes sure your pet does not get loose.● Folding and Expandable Pen: The pet exercise pen is either foldable or extensible. Flexible connections allow you can buy additional extension sets to create any size pen. Its wire design gives your pets a good vision and a chance to be close to the grass.● Easy to Set it Up: This dog playpen comes with 8 panels and is quite easy for you to set it up or break it down. No tools are required during assembly. Besides, its foldable and portable features aim to convenient storage and transportation for you, which is good for both indoor and outdoor use.