Loghot Dog Harness Reflective Nylon Pet Leashes Naples Throat Breathable Vest Harness Safety features include Nylon webbing with 3M Reflective material for good visibility at night and sturdy handle for looping seat belt through to secure your dog while riding in your car. Zinc alloy buckle traction: high quality zinc alloy material with anti-corrosion, high hardness, no deformation, matte anti-rust treatment. Stylish, durable, scratch-resistant oxford material outer layer. Comfortable lightweight mesh Lining with soft sponge padding in chest and belly. Adjustable straps allow a custom fit for your pooch. Ergonomic design ensures ease of use putting on and taking off Harness. Please measure for size. Measure your pooch's chest with a tape, at whatever point gives the widest circumference of front chest. Be sure to set aside 0.7-1.1 inches(2-3cm). Size SMALL: 12-17 inches(30-42cm); MEDIUM: 16-25 inches(40-62cm); LARGE: 21-37 inches(52-97cm).