HALTI Headcollar prevents dogs from pulling! Its unique and patented design works by gently directing the head and thus controlling the direction of the dog's movement, making training easier and regaining control. The HALTI Headcollar has become the world's favorite no-pull training device. It combines maximum safety and control with unmatched fit and comfort for your dog. HALTI Headcollar was invented in 1979 by renowned behaviorist and activist, Dr. Roger Mugford, and is approved and recommended by veterinarians, trainers, and canine professionals worldwide. The soft material and careful design and construction ensure that the HALTI Headcollar is comfortable and can create a pronounced calming effect in many dogs. The HALTI Headcollar makes dog training and behavior modification practical and safe. It can be used in various ways: either as a passive means to simply prevent dogs from pulling, or as an active aid for training. Millions have been sold worldwide. The HALTI Headcollar comes in six sizes for optimal fit for all breeds and sizes.