HARNESS SIZING GUIDE

Medium
Girth: 27 inch to 42 inch (68 cm to 105 cm)
Neck: 13 inch to 23 inch (33 cm to 58 cm)

Large
Girth: 27 inch to 42 inch (68 cm to 105 cm)
Neck: 17 inch to 27 inch (43 cm to 68 cm)

X Large
Girth: 31 inch to 48 inch (79 cm to 123 cm)
Neck: 26 inch to 35 inch (65 cm to 90 cm)

How to Measure:
Girth (Red): Around the chest, behind the front legs
Neck (Green): Around the neck