Pet Trex has done it again with their Crate-N-Kennel Exercise Playpens. 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.