These premium quality exercise pens are constructed from heavy gauge wire and incorporate all the bells and whistles of units selling for 3X as much. Whether you have a new puppy or an adult dog, the Crate-N-Kennel Exercise Playpen can be set-up indoors in minutes without tools. It can also be folded up for easy storage or for transporting to another location. The set-up includes 8 panels which are designed for a variety of pets. Our latest design incorporates our new "Doggie Door" feature so you can quickly enter/exit the pen.