TECHNOLOGY: dog cooler with 3 layer cooling fabric, Soak it in cold water, wring it out, and put the cooling vest on your dog, Evaporative cooling principle, During the phase transition from liquid water to water vapor, temperature drops, mesh material help wicking water, middle absorbent cotton holding water isolate from dog’s skin, mesh scatter the ice feel to 4-way of dog’s bodyPERFORMANCE: soft and lightweight material for all range movements, the dog cooling vest also helps UV protective, prevent the strong sunlight from hot summer, protect dog from sunburn, make dog feel like in cool swampHEAT REFLECTIVE: the dog cooling jacket work as a parasol and the gray color reflect the heat from sun, the orange color higher visibility, the inside rope helps size adjust and rope with reflective helps securityDOG COOLING VEST: leash attachment point, Zinc-alloy D-ring on the dog's back allow you to get the best no pull for dogSIZE ADJUSTMENT: The zipper with adjustable size keep dogs feel comfortable, and the velcro helps the harness fixed on dog, keep zipper fixed and helps adjust the neck width. The strap with 3M Reflective offer a high visibility