There are two ways to size the harnesses to your dog: weight-based sizing and chest circumference sizing.
Pet owners can choose one of two harnesses, based on the weight
of their dog. Two harnesses support dogs of all sizes. *
Small Breed: Fits dogs 20 pounds or less *
Standard Size: Fits dogs over 20 pounds *
* There are some extremely small and extremely large dogs that
will not fit into PetBuckle products.