1.Size and ColorThis link is Large Harness neck girth:17"-21",chest girth:18"-23".suggested weight 18~35 ib dogs.Recommended Medium Dogs. Please measure the size carefully before purchasing this present for your puppy. Dog vest harnesses are available in small, medium, large, and X-large 4 sizes and 7 color for your choice. Make your puppy stand out with this Classic Harness! 2.High-quality large dog harness is made of military nylon and adopts an upper and lower two-layer structure. The outer pattern is 1000D nylon with sturdy stitching for extra durability,and the inner layer is a mesh material with excellent breathable,comfortable fit and no harm to dog.The dog walking harness has a unique reflective strip design, which can alert pedestrians and vehicles when walking your dog in the evening, keeping your dog . 3.Stainless steel D-ringsallow you to control the puller with few effort and training your dog to walk beside you.Dog harness with handle sewn tough,large enough to grab the harness.Three perfect combination of use,not only slow down the impact of the dog's running,but also make it easier for the owner to control the pet's running and walking 4.FAST WEARINGThe dog harness for large medium dogs no pull with unique 4 quick-release buckles design which allows you to put it on from the side of the dog's neck instead of the head. This way of dressing can reduce the dog's resistance effectively, helping you to put it on or take it off quickly.Use the chest attachment clip to stop your dog from pulling on walks, perfect for dog training or dogs who tend to pull. The back one is great for casual walks, jogging, hiking, etc