SIZE GUIDEAvailable for small and medium dog breeds. And it will be more optional size in the future. [S -neck girth 15.8"-18.9", chest girth 17.3"-21.3"], [M -neck girth 18.1"-22", chest girth 20.5"-25.2"],[ All of leash- 5FT]. Max Comforty: The harness is made of premium fabric with high-density webbing to add durability. Breathable mesh lining and soft spongy pads ensure zero erasure of all puppy hair and blistered skin, providing maximum flexibility and comfort for outdoor activities. Custom FIT & NO CHOKE The dog harness is designed with 4 adjustable straps, which can be adjusted according to the size of the dog's body to get a perfect fit while still providing some room for growth.Vest-style design can evenly distribute leash pressure across the chest and shoulder to prevent choking or neck strain. To Be Basketball PlayerThe design of this sports dog harness and leash is inspired by NBA uniforms. Bright colors match meaningful numbers separately, conspicuous and avant-garde! Suit for pet owners and dogs who love to be outdoors and explore, making it ideal for jogging, running, heading to the dog park, hiking, late night walks and more.