Tired of your dog taking you for a walk? The Gentle Leader® head collar is a unique design preferred by many leading trainers, vets & behaviourists around the world. The Gentle Leader\'s® unique triple action, design counters the instinct to pull in 3 ways: 1) Gentle pressure is transferred to the back of the neck, naturally stimulating a relaxation response 2) Gentle pressure around the muzzle of the nose loop naturally gives a relaxation response 3) It works like a halter on a horse - where the nose goes the body will follow Join over four million dog owners who have found the secret to enjoying stress-free walks with their loyal friend.  Medium size: Labrador, Cocker & Springer, Spaniels, German Shepherd, Boxer, Retriever, Dobermann, Staffordshire Bull Terrier.