The Kaytee CritterTrail Playpen is perfect for keeping your pet safe from harm. The playpen features 12 wire panels that are connected together with a connector and a secure locking cap. The playpen also includes a large 24-inch wide and 28-inch long protective mat to keep your pet safe from damage. The playpen also comes with an optional passageway connector and secure locking cap for connecting to any other CritterTrail products.