This tent is made of wipe-clean fabric, has a removable mattress pad and ties to secure to your pen if desired. Attaches to the Medium Activity Tunnels to create your own custom play area. Measures about 30 x 30 x 30 cm, or 12 x 12 x 12 inches. Sized for guinea pigs and other large rodents. Available in Blue/Purple or Dark/Light Grey.