The width of the rear legs Measurement: S size:23-35CM/9.0-13.7; M size :35-45CM/13.7-17.7; L size:42-52CM/16.5-20.4; XL size:52-64CM/20.4-25.1. Hip lifter is a effective and perfect method for elderly dogs, weak back legs, orthopedic injuries, hip dysplasia, arthritis pain, ACL surgery or other debilitating ailments. Made of breathable sandwich mesh cloth + strong PP webbing that can withstand the weight of most dogs, with a rebound function, giving the dog buffer protection. According to different heights, you can freely adjust the size of the handle. The harness support your dog’s hindquarters resulting in less stress and support dogs walking, climbing stairs, getting on the car, etc. Convenient to wear this harness in your dog’s rear legs. Male dog, female dog can wear, does not affect excretion. Easy to clean and washable.