Yumegen Cool Pillow Mat

The gel mat reacts to the temperature of your body and absorbs excess heat. It's easy to use, just lay it down and you're ready to go. If you put it in the refrigerator before using it, the cooling effect will increase and the effect will last longer. (Do not put it in the freezer.) If you move the mat or change your body position, the cooling effect of the mat will return and you can sleep soundly until morning. *The cooling effect will vary depending on the temperature of the place of use.