Like Tru-Fit Dog harness-Smart Harness for German Shepherd

Small:

• around the neck of the dog (green color on the picture):
  11-20 inch (27-50 cm)
• around the chest behind the front legs (red color on the picture):
  20-31 inch (50-80 cm)

Medium:

• around the neck of the dog (green color on the picture):
  13-23 inch (33-58 cm)
• around the chest behind the front legs (red color on the picture):
  25-38 inch (63-95 cm)

Large:

• around the neck of the dog (green color on the picture):
  17-27 inch (43-68 cm)
• around the chest behind the front legs (red color on the picture):
  27-42 inch (68-105 cm)

Extra Large:

• around the neck of the dog (green color on the picture):
  24-33 inch (60-85 cm)
• around the chest behind the front legs (red color on the picture):
  32-50 inch (79-125 cm)