The Freedom No-Pull Harness features a patented control loop on the back of the harness which tightens gently around your dog’s chest to discourage pulling behavior and makes walking your dog an easy, more enjoyable experience for both of you. It also features a structural connection ring on the front of the harness. Features a Swiss velvet-lined chest strap to help prevent rubbing and chafing behind the front legs. The nylon webbing has been tested to pull up to 3800 lbs. It will not break or fray, no matter how hard your dog pulls.