Why do dogs need life jackets? The biggest role of life jacket is to help dogs swim reduce the amount of movement of the hind legs and protect the pet s hind leg hip joints. Adjustable Dog Life Jacket: Kuoser dog life jacket is designed with sturdy adjustable nylon straps with adjustable quick buckles at the neck and chest for easy on and off. Sturdy D-rings make it easy to attach the leash while walking your dog. High Flotation Dog Life Vest: Kuoser pet life jacket is made of rip-stop oxford and nylon fabrics and high-density pearl cotton foam to provide maximum buoyancy in the water. Reflective Dog Safety Vest: This dog life preserver is brightly colored with reflective strips to help you better notice where your dog is. Safe & Protective Dog life Vest: Kuoser pet life jacket has a safety handle on the top to help your dog get out of danger as quickly as possible.