NO PULL & CHOKE FREE SERVICE DOG VEST: L size dog harness recommended weight range: 39.7-66 lbs. Distribute the traction pressure of the service dog vest evenly over the body to prevent choking. All-weather breathable Oxford soft mesh vest for maximum comfort and protection for your service and working dogs. SAFETY HARNESS REFLECTIVE DESIGN: Reflective identification on the esa working dog vest tough durable nylon cloth gives visibility in low light and soft padding provides a comfortable fit, the dog reflective vest ensures the safety of your dog at night. Easy TO ADJUST SERVICE ANIMAL VEST: This large dog harness has adjustable dog collar strap and chest slide strap can be custom sized for your dog, easily adaptable to a variety of medium large dogs. Perfect for daily walking, running, jogging, hiking, training, working outdoor fun time