Small
  • Front chest circumference (between front legs and neck): 28 – 34cm
  • Back breast circumference (between front legs and belly): 30 – 36cm

Medium 

    • Front chest circumference (between front legs and neck): 32 – 40cm
    • Back breast circumference (between front legs and belly): 34 – 42cm
    Large 
    • Front chest circumference (between front legs and neck): 37 – 43cm
    • Back breast circumference (between front legs and belly): 40 – 48cm

    X-Large 

    • Front chest circumference (between front legs and neck):  43 – 53cm
    • Back breast circumference (between front legs and belly): 46 – 56cm