A cooling vest to keep the dog from overheating on hot summer days. The efficiency of the vest is based on the cooling effect of water. The vest is rinsed in cold water, wrung out and then put on. The vest efficiently cools the dogs chest and belly area from where the cooling effect spreads to the whole body. The product has an excellent absorption capacity. The vest is quick and easy to put on. It is suitable for all kinds of outdoor activities and dog shows. The vest covers the whole back area.