Dog Harness Size L: The chest girth of the harness is 38-76 cm. Suitable for medium and large dogs such as Golden Retriever, Labrador, German Shepherd, Billy Bulldog, etc. We recommend that you measure your dog's maximum chest girth, neck girth, and weight before purchasing (see size chart). Anti-Pulling; Anti-Choking: Our anti-pulling dog harness distributes the pulling force evenly and does not put pressure on the dog's neck. This makes it resistant to both choking and pulling. It also has two zinc rings on the chest and back, which are suitable for walking forward and backward. Easy to Put on and Take Off: This dog harness is easy to put on and adjust. Quick-release buckles make it easy to put on and take off. Adjustable chest and neck straps allow for a customized fit for your furry friend. Perfect for walking, running, jogging, outdoor activities, etc. More Safety: The nylon dog harness is highly durable and made of reflective material to ensure your dog's safety during nighttime