The Chillow® is a thin, very soft, medical-grade, non-electric thermoregulating device. Its main application for which it was designed is to keep your pillow cool. If you ever "flip" your pillow looking for the "cool spot", you re been searching for the Chillow® device all your life! It is a steady, lasting, and super comforting sensation which doesn t blow air, make noise, or cost money to run. There is no product in the world like it. Just activate it one time, and leave it in your pillow full-time. Its very soothing and relaxing effect will give you super sleep night after night- you re never too hot, you re never too cold....you re always perfectly comfortable!There are also many other uses for the Chillow® - hence Comfort Device. It has a tremendously comforting, relaxing, and soothing sensation, enjoyable in so many situations- from headaches to hot flashes to hot tired feet, to injury treatments and sunburns, the Chillow® feels great for them all.