Please refer to our Size Chart before buying:
Extra Small ---------- Neck Girth: 10”-12’’; Chest Girth: 10”-20”;
Small ----------------- Neck Girth: 12’’-18”; Chest Girth: 14”-24”;
Medium -------------- Neck Girth: 14’’-20”; Chest Girth: 16”-28”;
Large ---------------- Neck Girth: 16’’-24’’; Chest Girth: 22”-33”;
Extra Large --------- Neck Girth: 22’’-33’’; Chest Girth: 28”-39”;
Tips: Please Measure Around Head to Make Sure Head Can Pass Through the Neck Opening. Very Important to Measure Before Buying. Then simply measure your dog's neck and girth for the proper harness size. There should always be enough room to comfortably slip one finger between the strap and your dog's fur.