Carhartt pet vest size: Large 45-75 pounds dogs brand new this dog coat is made with tough, 12 oz. duck canvas and a water-repellant coating to protect your pup from the wet, windy weather.A quilted nylon lining seals in warmth and the improved hook-and-loop closures allow you to adjust this coat for a perfect fit. With the Carhartt Dog Chore coat, your pup can tag along on all your winter chores.