About this item Harness&Leash Set: The package includes one dog harness and one leash, a perfect setting for your lovely dog. Size L: Leash(Length 3.9Ft), Harness(bust 21-35",weighing 15-30kg); Size X-L: Leash(Length 3.9Ft), Harness(bust 31-39",weighing 25-45kg). Please carefully measure the chest girth of your pet to ensure it can be worn before ordering. Excellent material:The surface of Dog Vest Harness is made of high-quality nylon material, with strong workmanship, good flexibility and high-cost performance. On the back, we choose lightweight,breathable, elegant foam cotton fabric that does not hurt dog's skin. It is very suitable for warm weather (especially in summer) .The leash with D-shaped lifting ring is made of steel, equalling to military quality. It has a large load-bearing capacity, greatly improves the tensile strength. Adjustable Chest Strap: Adjustable chest strap can customize the better fit for your dog,You can adjust the chest strap appropriately according to the size of your dogs. It makes your dogs more comfortable when walking, training. Comfortable Fit: Keep your dog cool with less coverage than many other harnesses; light and breathable construction while still maintaining quality and durability. Easy to Wear and Adjust, Anti-suffocation:Our adjustable vest harness ​is easy to put on and take off. The quick release buckle (carabiner) on the top allows you to open and close it easily. It has two easy-to-adjust buckles around the body. At the same time, unlike those dog collars, our product won’t hurt your dog’s sensitive throat and trachea when your dog is being pulled or running