I have a dog that goes bananas if he smells something meaty or sees other dogs outside while on a walk and he pulls! Somehow he learned how to get out of his old leash even when kept on the tightest possible spot. But with this one, he cannot pull, as the leash is from the front side and the harness is nicely secured (without being tight) behind the front legs. It's working for me nicely, now I can take him for walks without being tensed of the struggle because there's none now. Plus it's complete with the ZeeDog ruff leash because even the slightest pull is not felt as it has that kind of shock-adsorbent rubber. Super happy with the combo.