The Kurgo Impact Harness is the next generation in Kurgo crash-tested car harnesses. Based on 8 years of engineering car harnesses, the Impact Harness is a totally new harness design using a single piece of high 10sile tubular webbing with reinforced bar tacking. It is purpose built for car safety as well as your dog's comfort which reflects all of the knowledge we have developed over the last 12 years developing pet travel products. This harness has been tested at an established test facility using the FMVSS 213 standard. It has been tested for dogs up to 108 pounds. If you have any questions or concerns about our products, please contact Kurgo and we would be happy to assist you