The harness has a martingale loop on the chest. It was impossible to walk Iker because he was so scared and always pulled towards home. After I purchased the harness, I was able to take him for a walk around the neighbourhood for the first time in the three years that he had lived with me. Not only was he easy to walk, but his tail is no longer tucked under his belly. There must be so,etching about it that lets him feel more secure.
He doesn't look happy in this picture as it was cold out, but this gives you an idea of what it's like.