MORE SIZES - This dog cooling vest is a great gift for dogs to help them cool down. Dissipate heat We offer different sizes for different ages and different height dogs, including XS, S, M, L, XL, 2XL Please measure your pet before purchase, to choose the right size (It is recommended to leave 2 fingers space between the measuring tape and the dog’s neck and chest to ensure the dog is comfortable to wear) More comfortable to wear wear - cooling material to wear 3 layers:The surface mesh helps with this; prevents UV and has good breathability. to evaporate water to dissipate heat The absorbent cotton of the middle layer retains water to provide the dog with a constant source of freshness through the endothermic principle of evaporation, but it will not drench the dog’s hair in order to to cause sick skin The bottom cool fabric is lightweight, breathable and safe to bring cool comfort to your skin. the animal More durable - We consider the impact of large dogs when they move, so the