Keep your pet safe and secure using the portable pet play pen. Whether you are outdoors or inside, know where your pet is at all times. It has an open or close top with mesh sides for cool ventilation and shade. The base is also waterproof. Indoor dog pen will keep your pet comfortable. Self closures with removable nylon and mesh zippered top provide easy access to pet. Pet pen is strong yet lightweight. Puppy exercise pen is great for on-the-go, traveling, visiting friends and family too. Never leave your pooch behind. When standing, medium and Small dog playpen measures 23 inches in diameter and 17 inches in height.