How to measure for a proper harness fit: Measure the circumference of your dog’s neck from an inch or so above the shoulder blades to an inch or so above the breastbone and back, then compare that measurement to the sizing chart. If the neck size and suggested weight don’t match, go with the bigger harness to ensure the body strap won't sit too close to the dog's armpits.

 

Sizes:

 •S 18.5-19 inches (40 - 49 lbs.)

 •M 19.5-20 inches (50 - 59 lbs.)

 •L 20.5-21 inches (60 - 69 lbs.)

 •XL 21.5-22 inches (70 - 79 lbs.)

 •XXL 22.5-23 inches (80 - 89 lbs.)