Cetacea Medium Adjustable Martingale Chain, 3/4", Navy Blue Recommended by vets and dog trainers when a correction collar is needed on your dog, vets and dog trainers recommend this type of dog collar Designed to imitate the type of collars horses wear, which provides a limited choke collar dogs Quick release buckle practice quick release buckle so that the collar doesn't have to be adjusted to put on or remove the collar Made in the United States Cetacea offers matching leads for every collar