Dog Harness Size L: The chest circumference of the harness is 38-90 cm. Suitable for medium to large dogs: eg Golden Retriever, Labrador, German Shepherd, Billy Bulldog, etc. Before buying, we recommend that you measure your dog's maximum chest circumference, as well as your dog's neck circumference and weight (Please refer to the size chart) Anti Traction; Anti-Suffocation: Our anti-pulling dog harness distributes the pulling force evenly and does not put pressure on the dog's neck, making it anti-pulling and anti-choking. It also has 2 zinc rings on the chest and back of the harness, suitable for forward and reverse Easy to put on and take off: This dog harness is easy to wear and adjust. Quick release buckles ensure ease of use when putting on and taking off. Adjustable chest and neck straps allow for a custom fit for your furry friend. Perfect for walking, running, jogging, outdoor fun, etc Safer: The nylon dog harness is very strong and made of reflective material to ensure your dog's safety when traveling at night. The back of the harness has a sturdy handle designed so you can easily grab it and protect your dog in an emergency Comfortable fabric: Our No Pull Dog Harness is made from durable, allergy resistant and highly breathable Oxford fabric. Breathable mesh lining and soft foam padding prevent injuries and provide extra comfort and protection for your dog