Rooster Farms Large Breed Dog Wheelchair - Adjustable Back Hind Leg Mobility AidSizing Note: Fits dogs up to 45kg, depending on body proportions and stance width. Frame size is fixed across options; only the harness size changes. Measure chest girth and distance between front and rear legs using the size chart in the images to confirm fit. The Rooster Farms Dog Wheelchair Designed for dogs with reduced back leg mobility that can still balance their front body weight. Very wide or highly active dogs may require a wider