S: Neck Girth: 39-47CM, Chest Girth: 44-50CM, suitable for dogs weighing 4.98-9.97KG. (Size chart on the left) Size is very important. Please confirm. SUPER COMFORTABLE: The two adjustable straps at the neck and chest with soft, chafe-free sleeves make this your pet's favorite harness. COMFORTABLE AND DURABLE FABRIC: Breathable and soft, your pet deserves the best! NO CHOKING: Unlike collars, this product will not harm your pet's sensitive throat and trachea, especially if your dog pulls or jumps. Reflective threads sewn all around ensure safety and visibility at night. EASY TO WEAR: Wearing this product is a joy for you and your pet. No need to lift a paw. Literally Attach & Go! It's just as easy to remove. The sturdy, quick-release buckles offer ultimate convenience. Tangle-free: won't cause tangling, unlike collars. Heavy-duty safety grip: Instantly control your dog during training and emergencies. Help dogs out of water, guide pets into vehicles, or easily attach to seat belts.