Size Instruction: Dog vest harnesses are available in S, M, L, and XL 4 sizes for your choice. Suitable for professional K9 training, hiking, and walking for German Shepherds, Labrador, Doberman, Retrievers, etc. Military-standard Materials: large dog harness is made of military nylon and adopts an upper and lower two-layer structure. The outer camouflage 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 the dog. Fast Wearing: The no pull dog harness for large dogs with a unique 4 quick-release buckles design, allowing 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 Sturdy Handle and 2 D-rings : 2 stainless steel D-rings, allow you to control the puller with little effort and training your dog to walk beside you. Dog harness with handle sewn tough, large enough to grab the harness. Three perfect combinations 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