The dog backpack harness fits most small pets between 5 and 7 pounds; It’s an excellent choice for a Cat, Puppy, Chihuahua, Bichon Frise, Boston Terrier, Papillon, Pomeranian, Shih Tzu, Maltese, Yorkies, and more. Worried that you’ll need a massage after wearing this puppy carrier? Think again; The padded straps are fully adjustable, so you can always find the perfect fit; Plus, you can wear it as a backpack and then switch to a front carrier to give your back a rest and pet a different view.Some dog carriers for small dogs can be tricky to use; It takes some work to get your pet situated comfortably; Not this one; The zipper system allows you to get them in and out in seconds; This is important because we know how impatient pets can sometimes be.