The HALTI Harness was designed by Dr Roger Mugford to STOP a dog pulling by providing front control. It applies the same principle as the HALTI Headcollar but by steering the dog from his chest rather than by his head. The HALTI Harness puts owners in control of dogs that don’t like or cannot wear a HALTI Headcollar. The patented front control system steers the dog from his chest and shoulders - and thus sets the direction in which he can move. Unlike other designs of anti-pull harnesses, the HALTI does not put painful pressure on the body and is always comfortable. Ideally used with a double-ended lead to give maximum control. The back ring above the shoulders acts as a brake while the front lead steers. Available in 3 sizes: SMALL - Chest Measurements - Minimum 40cm / Maximum 66cm - Ideal for: Bichon Frise, Boston Terrier, Cairn Terrier, Cavalier King Charles Spaniel, Corgi, Dachsund, Jack Russell, Pug and Papillon. MEDIUM - Chest Measurements - Minimum 57cm / Maximum 95cm - Ideal for: Airedale, Beagle, Border Collie, Boxer, Chow Chow, Dobermann, Golden Retriver, Labrador and Staffordshire Bull Terrier. LARGE - Chest Measurements - Minimum 66cm / Maximum 107cm - Ideal for: Alaskan Malamute, Bloodhound, Bull Mastiff, Great Dane, Japanese Akita and Rottweilier.