Dimensions - The size of this kitten playpen indoor is 36 inches diameter with a height of 23 inches. Spacious interior give more fun for your pets. Including a dog pen indoor and a storage bag in the package. PLEASE measure your pets before purchasing to ensure a right indoor dog pen. Comfort and Security - The portable dog crate ensure comfort and security, provide a safe enclosed space for cats kittens and rabbits to lounging and playing. The light mesh window all-around and half-mesh top delivers great airflow, as well visibility for anxious pets.