The Freedom No-Pull Harness features a patented control loop on the back of the harness which tightens gently around the dog’s chest to discourage pulling behavior and makes walking the dog an easy, more enjoyable experience for both. It also features a structural connection ring on the front of the harness. Connecting to this ring is optional, but recommended, as it allows to attach to the front and back of the harness simultaneously. Used this way, one is able to control pulling, as well as redirecting the dog’s attention back to you for training and treats. The Freedom No-Pull Harness features a Swiss velvet-lined chest strap to help prevent rubbing and chafing behind the front legs. The stainless steel hardware used on the harness will never rust or corrode and 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. Ideal to keep control of boisterous dog, small or big. Ideal for sighthounds with a narrow neck. Patented system, recommended by dog trainers all over the world. Extremely effective to minimize pulling for several reasons : Tightening effect of the loop on the harness; Location of the loop; Reconfigurable design that allows you to attach to only the back or to the front and back of the harness simultaneously. The Freedom No-Pull Harness is designed to fit any dog from 14 lbs all the way up to 250+ lbs. SELECTING THE CORRECT SIZE Measure the circumference of the dogs chest just behind the front legs. Tape measure should be placed flat and not be loose. Select a size that is between the specified size range. When selecting /recommending a size, please use the EXACT GIRTH measurement as the PRIMARY method for ordering – Weight ranges are only approximate.