The Comfort Wrap, step in style harness is super easy to get on and off your pet! Featuring 3/4" nylon that has been specially procesed to prevent fraying and increase strength this harness adjusts from 20" up to 30" and is suitable for average / medium size dogs. To put this style of harness on your dog, open the harness and lay it flat. Assist dog to step into harness, pull up around body and buckle. Use slide adjustments for final fitting.