The Cooling Wrap is safe for your dog because it mimics our body’s own natural cooling process. Simply soak the vest in cold water, squeeze the water out, and then it’s ready for cooling. As the cool water evaporates it creates a cooling reaction, helping your dog stay cooler longer. The thin inner layer's microfibers’ remarkable absorption power does what conventional fibers can’t, creating a longer-lasting cooling effect. The vest’s three-dimensional mesh fabric directs airflow, causing moisture to evaporate from the cooling layer, while the lining’s technical, moisture-wicking knit feels comfortable even when wet. The Cooling Wrap is designed to cover the areas of the dog’s body that enhance cooling, namely the chest and its large blood vessels and the lungs. As circulation occurs, the vest’s cooling effect spreads throughout the body, eliminating the need for the garment to cover the majority of the dog’s body.