SturdiBagTM divided extra large pet carrier has two pet compartments to carry two small pets in one carrier. The divider may be unzipped to convert to a one compartment carrier. This carrier has been tested to safely carry up to 50 pounds (22.6 kg). It can be used with or without the center divided. Many professional animal trainers and exhibitors who travel with cats and dogs extensively prefer SturdiBagTM because it is simply the best in-cabin, light weight, flex-height pet carrier available. Whether it is used on a plane, in the car, or for carrying on foot, your pet will be comfortable and safe in a SturdiBagTM cat or small dog carrier.