Red Dingo is an Australian company who have put together a wide variety of dog leads, dog collars and dog ID tags to suit all kinds of canine customers. Big or small, dark or ginger there's something for every fur coat. All the Red Dingo products are strength and safety tested to the highest quality standard in manufacturing terms, embracing design without ever compromising functionality. A Red Dingo Martingale collar is a special type of dog collar that helps a dog stay comfortable while being completely secure on their leash. A Martingale collar is made with two loops. The large loop is placed around the dogs neck and adjusted to fit loosely. The leash is then clipped to the D ring on the small loop. When the dog tries to pull their head out of the collar, the tension on the leash pulls the small loop taut, which makes the large loop smaller and tighter on the neck preventing escape. When adjusted properly the dog is never choked, but the Martingale Dog collar stays snug around the dog's neck (just behind the ears) until the pressure is released.