The halter places control of your dog around his center of gravity rather than his head or neck. This method moves the training cues from the head and neck to the dog’s body, utilizing a dog’s instinctive push/pull reflex called the opposition reflex. A dog's natural inclination is to move toward pressure. This reflex is why so many dogs pull while on leash - as you pull, they pull back. Our standard harness is a colored back strap and black chest and girth straps, if this is not the style that you would like then you can select ANY TWO color options from our 19 colors. Simply tell us in the comments at the end of the ordering process your choice for the back strap color and the body (chest and girth) strap color. No single color harnesses are available. The offset color of the back strap is part of the design.