Dog Harness MediumFit Chest Girth 17-20 inch; please choose size based on your dog's chest girth by measuring around the widest part of your dog's chest before purchase (if between sizes, choose the larger size and be sure to set aside 1 inch), recommend for mediumand small dogsQuality MaterialThe puppy harness made with a soft, breathable air mesh allows efficient air flow throughout the chest area to keep your dog cool and dry.It has nice padding on the chest and back, so your dog can wear this all day without being uncomfortable.Easy-wearingThis easy-wearing harness is simple to put on and take off with 1 snap side-buckles and 4 fully adjustable straps. The adjustable straps which allow a just-right fit for your pets.Reflective Design The small breed dog harness strip makes your pet visible in low light conditions with reflective strip design and make your small breed dog more visible and safe in dark, suit for evening walks.It makes drivers have a long time to react if your dog is on the road.All Day ComfortThe high-end harness is perfect for daily walking, running, hiking, training, hunting, outdoor adventure and more!