Prestige Cool-Coats are activated by water. They are light, cool and soft to the touch, making them luxurious and comfortable for your dog to wear. The Cool-Coat will make your dog feel cool, not wet. You can test this by putting your hand beneath the dogs coat and feeling how cool they feel compared to any part of their coat that is exposed to the sun or heat for a period of time. As the heat of the day slowly evaporates the moisture from the Cool-Coat, this in turn draws the heat out of the dogs body, leaving them feeling far cooler than before. When the Cool-Coat coat starts to dry out, it will begin to go back to its natural state, becoming slightly dryer, and a little stiff. When this happens, simply re activate the coat by immersing it in water for a couple of minutes. Once the Cool-Coat is completely saturated, remove the coat and squeeze out the excess water, so the coat feels cool, yet not wet. To clean the Cool-Coat, wash through thoroughly in clean water. If really dirty, it is safe to put it through the washing machine. Please remember to wash dark colours separately. To store, simply allow the coat to dry and pack away. Made from 100% synthetic material. Sizing: X Large- 80cm, Large- 64cm, Medium- 50cm, Small- 38cm, X Small- 28cm.