The non-toxic gel material inside the mat offers relief for your pet from warm weather and hot climate by lowering your pets body temperature. It isn't necessary to refrigerate the mat, it doesn't need to be filled with water, nor does it require electrical cords or batteries as the body contact induction happens automatically while your pet rests. The supple inner layer of gel also provides generous comfort and support for all breeds and is especially suitable for senior or arthritic pets. The outer nylon fabric shell is stain resistant and durable, able to withstand tearing and piercing. Position the Stay Cool Mat out of direct sunlight or heated locations. Ideal placement is in shaded areas your pet would naturally seek during warm conditions. After prolonged use, the cooling performance of the mat will be reduced but can be renewed once a pet gets up for a brief period to return to a refreshed mat.