Company of Animals Halti Training Lead - Large Red The Halti training lead was designed by Dr. Roger Mugford to provide optimum control, and to simplify training with head-collars or harness. How Does it work? The Halti training lead has 8 different uses: Short length for heel training or normal walking Medium length for obedience training Long length for recall or distance work Hands-free dog training Two dogs on one lead - making use of the double ended trigger hook Easy, supervised tethering Double steering for optimum Halti control on headcollars or harnesses Recommended for use by canine professionals worldwide