The Kool Mat provides a refreshing cool surface for your pet. It can be used indoors or outdoors and requires no electricity, simply add water from your tap to activate. Our unique mesh padding provides superior heat transfer compared to competing products. The Kool Mat works by transferring heat away from your pet while providing a soft cushion pad for comfort. Our proprietary FridgeFold design allows the mat to be conveniently folded and placed in your refrigerator for those hot summer days when your pet needs extra cooling, while also allowing it to be conveniently stored during winter months. Patent pending. The Kool Mat also includes a free cover-a $20 value! Based on 50% relative humidity. Actual temperature drop will depend upon humidity. Lower humidity will produce a larger temperature difference. All of our products are fully warranted against defects in workmanship for a period of 1 year from the date of purchase, unless otherwise noted.