This head collar is a popular choice with motivational trainers. Its quick-release buckle allows for easy on and off. While wearing the Gentle Leader your dog can open its mouth, eat, drink or bark unless you apply pressure to the control lead to control ahead and close mouth. When using the Gentle Leader, dogs react instinctively, learning quickly that you are the “pack leader,” without traditional corrections. The Gentle Leader controls your dog’s entire body by controlling the head & nose: where the head goes the body must follow. Gentle leader is made from 5/8” Red nylon.