Fairwin Service Dog Vest Adjustable Size - Pet supplies for small, medium to large breeds. Please refer to the harness size chart as reference to choose the right size and measure your dog's girth size before ordering Small :3/8"/Pet weight: 10-25lb Medium: 7/8" /Pet weight:25-40lb Large: 1"/Pet weight: above 40 The leash length: 6feet. Heavy Duty Construction - Two layers of sturdy red jean material makes the dog leash support harness incredibly resistant to wear and tear. The orange nylon stitching adds to the strength of the design Stylish Look - With orange contrast stitching on one side and vibrant red on the other, the dog leash and harness have a clean, classic look that will make your dog the handsomest pet at agility obedience behavior training classes or at the dog park! Superior Quality - Pet leash and harness designed and built with material for tough use with durability