This is the Blue Reflective Adjustable Nylon Dog Harness by Pet One. This adjustable dog harness is great for those dogs that are constantly yanking, pulling or fighting the leash. Using a reflective dog harness allows you to have more control when taking your dog for walks and will ensure your four legged pal is more visible on those early morning or late afternoon walks. Please note: The harness measurement is from clip to clip. to correctly measure your dog measure their chest circumference, behind the front legs.