Adajustable No-Choke No-Pull Front Leading Nylon Dog Harnesses Training Walking Lead Leash for Large/Medium/Small Dog Stop Pulling A quick snap buckle on both the shoulder and belly straps make it easier to get the harness on and off. Soft, but strong nylon and four adjustment points provide maximum comfort and a reliable fit. This front lead unique front-chest leash attachment stops pulling by tightening slightly across your dog"s chest and shoulder blades. The gentle pressure steers your dog to the side and redirecting his attention back towards you.