This harness is great for pets that are physically challenged or have structural limitations and can be used on amputees. Designed to help cats and dogs suffering from arthritis, hip dysplasia, spinal trauma and general fatigue it can be used on animals that have nerve damage, need soft tissue management, sporting dogs, and police dogs. It is also useful for pet owners or handlers in avoiding personal injury. The Front Harness has a smooth, semi-circular neckline, which allows your pet to breathe comfortably, while supporting his/her front end. XLge will fit dogs measuring 79-96.5cm (31-38”) around the chest behind the legs and 28-35.5cm (11-14”) around the front leg where it meets the body.