It combines maximum safety and control with unparalleled fit and comfort for your dog. The halti headcollar was invented in 1979 by world-renowned animal behaviorist and activist dr. Roger Mugford and is approved and recommended by vets trainers and canine professionals worldwide. The soft material and careful design and construction ensure that the Halti headcollar is comfortable and in many dogs can create a pronounced calming effect. The Halti headcollar makes training and behavior modification of dogs practical and safe. It can be used in several ways. Either as a passive means to simply stop dogs from pulling or as an active training aid.