Size: Medium/Large The Harness Lead dog leash and harness set was designed with ultra comfortable materials to safely prevent your dog from escaping and pulling. Dogs are immediately encouraged to slow their pace by using their own resistance against the leash. Enjoy calm walks with our dog harnesses that gently tightens around the chest only, not around the neck or armpits. The Harness Lead no pull harness fits all body types. When properly adjusted, the unique design doesn’t rub underneath the arms, unlike other dog leashes that prevent pulling. Our dog walking harness naturally calms down dogs, allowing a more enjoyable walk for both you and your pup. As with all dog harnesses, please do not use it to tie out, jerk, yank or correct your dog. The one-piece escape proof dog harness makes it impossible for dogs to get out of the harness. If your dog attempts to back out of the harness, the leash will tighten like a slip lead.