The SturdiBag small carrier a compact and light pet carrier and has been d to safely carry up to 30 pounds but is best suited for cats and toy breed dogs up to 10 pounds.  Dog breeds such as Yorkshire Terrier, Maltese and Chihuahua travel comfortably in this size carrier. Many professional animal trainers and exhibitors who travel with cats and dogs extensively prefer SturdiBag 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 foot, your pet will be comfortable and safe in a sturdier cat or small dog carrier. Carrier Dimensions: 18 inch length x 10 inch height x 10 inch width.