How to choose the right size for your pet: 1) identify the breed 2) measure the length of the dog's back 3) check the size chart and compare the parameters you got with it, paying the major attention to the back length! (the chest girth is designed so that your dog could freely move)
Apparel size chart: Our apparel sizes correspond primarily to your dogsbody lengtn as illustrated in the how to measure your dog diagram.
PUG, FRENCH BULLDOG
AMERICAM COCKER SPANIEL, ENGLISH COCKER SPANIEL, BEAGLE, ZWERGSCHNAUZER, MEDIUM SPITZ, SHELTIE, FOX TERRIER