No traction and strangulation: 2 sturdy metal rings with reinforced stitches for safe walking of the dog. When your dog pulls, you can tie a chest ring to control your dog. A back loop used for occasional walking, jogging, hiking, etc. There is no pressure on the dog's neck, and the pressure is evenly distributed on the body to avoid pulling and suffocation. The vertical handle helps you control and assist your dog. Easy to wear and adjust: This dog harness is easy to put on and take off, and the buckle is quick and simple. The fully adjustable chest strap and neck strap can be tailored for your furry friends. Put the seat belt on your dog's head, fasten the seat belt, adjust the shoulder belt, and go Very suitable for daily walking, jogging, hiking, training, outdoor recreation. Durable and comfortable: The dog harness is made of durable scratch-resistant Oxford material, which is super easy to clean and can be used for a long time. The quick-drying, soft and breathable lightweight mesh lining maintains the best comfort in outdoor activities, even for tactical training. Reflective straps: with reflective nylon webbing, the pet vest is visible in low light conditions, always protecting your dog's safety and ensuring good visibility when running at night. Size: This dog harness has a fully adjustable sliding belt, suitable for golden retrievers, labrador retrievers, German shepherds and other super large to medium dogs. Please measure the bust and neck circumference before buying (reserve 2-3cm) S: Bust: 12.99-24.41"Neck: 11.81-16.54" M: Bust: 15.35-26.38"Neck: 13.39-19.69" L: Chest circumference: 17.72-31.50"Neck circumference: 14.17-22.05" XL: Bust: 19.69-35.04"Neck: 18.90-27.58"