DT UNIVERSAL NO PULL is the ideal harness for training your dog not to pull when walking; however it can also be converted into a pulling harness. When the leash is attached to the front chest strap it is a no-pull harness; the dog will turn in towards the handler when he tries to pull. When the leash is attached to the back strap it is a pulling harness, force is evenly distributed over the chest. Pulling harnesses are useful for exercising, tracking, sledding, etc.