Considerations and Exceptions



Total Weight

In most cases, your dog’s total weight will determine what size they need.
Tip: If your dog’s weight is between sizes, we recommend sizing down.

Age/Condition

For older dogs that may be struggling with atrophy or degenerative hind quarters, sizing down the harness rear may be needed to achieve an optimal fit. 

Tip: Consider where your dog’s total weight falls within a size range. If your dog weighs at the lower end, a smaller rear harness might help—a 55lb dog with a degenerative hind may benefit from a small size rear, while a 75lb dog with similar build would do well with a full medium.

Breed

Occasionally, some barrel-chested breeds may require a larger harness front in order to achieve an optimal fit. If your barrel-chested dog’s total weight is between sizes, consider our Mix & Match option—size up the front and size down the rear.