A martingale collar is designed for dogs that tend to slip out of regular collars. It features two loops: a wider one that rests comfortably on your dog's neck, and a narrower control loop. To put it on, loosen the collar, slip it over your dog's head (or use the buckle if the collar has one), and adjust it comfortably. When your dog pulls, the control loop uses a limited amount of cinching to promote secure walks and positive retention. Once the pressure is released, the collar loosens back to its normal position. Always ensure a proper fit to avoid discomfort and ensure safety.