【Durable and Sturdy Structure】The puppy playpens are made of durable & premium iron, and coated with rust, corrosion and fade resistant finish, which could provide you a sturdy & heavy-duty dog fence for increased longevity and durability. This dog playpen structure is stable, won't be knocked down or destroy by your dogs. 【Indoor & Outdoor Use】The bottom is equipped with non-slip stopper, which won't damage the floor of your house. When outdoors, stakes connect the panels firmly and serve as anchors to secure the playpen in place. The top of metal stakes are specailly designed with a round ball on top to protect the dog's claws from injury, while the bottom are designed to be easily inserted into the ground for more stability and rigidity, which won't collapse when the dog leans against it. 【Safe Dog Playpen】This dog playpen keeps pets safe and provide large space for them to exercise and play. The automatic gravity-actioned door lock mechanism is different from traditional door latches, preventing pets from pushing the door on its own accidentally and escaping away, keep your pets in a safe space. 【Easy Assembly in Multiple Shapes】The dog fence come with 8 panels, can be combined repeatedly using the poles in short time. It can be configured in different shape like square, octagon, rectangle, 2 small squares and divider fence by adding or removing panels according to your room or yard to meet your needs. When you don’t need to use it, you can remove it in minutes. So this foldable dog pen for easy storage and transportation, which ideal for travel, RV camping or for the yard. 【Wide Application】This practical pet gate is perfect for travel and at-home use. The pet pen is ideal for puppies, medium dogs and large dogs, while works great as an exercise area for non-climbing small animals including rabbits, ducks, turtles, guinea pigs. Besides, it's also a good idea to make it as a garden fence.