Comfortable Cooling Material: The pet cooling vest surface layer is mesh, light and breathable, and can reflect part of the external heat the middle is made of absorbent cotton material, which stores moisture and absorbs heat through evaporation the body is made of cool fabric, which brings coolness to the skin. Reflective Design: The reflective design can effectively help owners find the location of pets faster, and provides high visibility at night. Leash Loop and Safety Buckle: The dog cooling harness with the fixed buckle is firmer to wear, and the D rings on the back can link to the pet's leash, making it easier for pet lovers to walk the dog. How to Use: Soak the dog vest in water, wring it dry until it drips free, then easily put it on your dog with the fasteners and buckles. Application: The dog cooling harness vest allows the dog to play happily in the hot summer, like walks, beach, cycling, training, climbing, etc. Specification: Material: Polyester Size Chart: S Bust: 30cm 48cm or 11.81inch 18.90inch Collar: 35cm or 13.78inch Back Length: 28cm or 11.02inch M Bust: 39cm 56cm or 15.35inch 22.05inch Collar: 38cm or 14.96inch Back Length: 35cm or 13.78inch L Bust: 49cm 70cm or 19.29inch 27.56inch Collar: 44cm or 17.32inch Back Length: 42cm or 16.54inch XL Bust: 60cm 80cm or 23.62inch 31.50inch Collar: 51cm or 20.08inch Back Length: 50cm or 19.69inch XXL Bust: 74cm 94cm or 29.13inch 37.01inchh Collar: 56cm or 22.05inch Back Length: 58cm or 22.83inch XXXL Bust: 84cmx110cm or 33.07inchx43.31inch Collar: 65cm or 25.59inch Back Length: 67cm or 26.38inch Package Includes: 1 Dog Cooling Vest Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!