The Halti Head Collar is a simple and effective aid to help you train your dog without force. Just put the head collar on your dog and you will be able to easily guide your dog during training. This head collar has a specialised design with a unique muzzling action: if your dog pulls sharply forward, the slip ring under the jaw tightens the collar so that your dog's jaws are gently forced to close. As soon as your dog stops pulling on the lead, the bands loosen and your dog can open their mouth again. The Halti Head Collar is fully adjustable and highly comfortable for your dog to wear. Teach your dog to stop tugging on the lead once and for all with the Halti head collar, so you can both enjoy your walks together! Halti Head Collar - Black at a glance: Training aid for dogs Gently train and control your dog without force Unique muzzling action: If your dog pulls on the lead, the straps with muzzle their mouth and only relax when your dog stops pulling Highly comfortable: fully adjustable, padded nose band Helps to prevent your dog from pulling on their lead Stainless steel carabiner: for a secure fit Reflective trim on the noseband: for higher visibility Training manual included with helpful hints Colour: black Size Guide: Size Noseband Neckband Suitable Breeds: 2 Approx. diameter: 21 - 28 cm 35 - 48 cm Australian Cattle Dog, Bedlington Terrier, Scottish Terrier, Shar Pei, Staffordshire Bull Terrier, Standard Schnauzer, Vizla 3 Approx. diameter: 24 - 36 cm 40 - 54 cm Bull Terrier, Golden Retriever, Husky, Labrador, Malamute, Setters, Weimaraner, German Shepherd 4 Approx. diameter: 30 - 40 cm 46 - 62 cm Akita, Bernese Mountain Dog, Bull Mastiff, Giant Schnauzer, Irish Wolfhound, Newfoundland, Rottweiler Please note: The Halti Training Lead shown in the product image is not included with the Halti Head Collar and can be purchased separately: Halti Training Lead