ARINg PET Dog Halter Harness, Velvet Dog Harness, No Pull Dog Halter Harness, Adjustable Heavy Duty Dog Harness for Small Medium Large DogsSIZE INFO:It is always recommended to measure the neck as well as the girth of your pets firstly, and then find the most accurate sizing for them before you ordering X-Small: Strap width 12, neck&chest girth adj..