Meet the newest member of te CritterTrail family. CritterTrail mini One is the ""E-Z"" to carry compact size cage for little critters! CritterTrail mini One comes complete with a a Water Bottle and Food dish. Four add-on accessory location provide for the addition of exciting components as well as connection to other CritterTrail homes. CritterTrail mini is the perfect size for dwarf hamsters, young hamsters, and mice." * "12.5""L x 8"" W x 7.5"" H"