The Serenity Cool Blanket optimizes comfort by keeping your body temperature at a more comfortable level for optimal sleep. Designed for optimal sleep, this blanket features Phase Change Material (PCM) Technology printed onto 100% Cotton. As the phase change material absorbs heat from your body surface, it liquefies, trapping heat inside making you feel cooler. When your body temperature drops, the material solidifies, and in doing so, releases the previously stored heat energy giving a warming effect. PCM allows you to sleep at a perfect temperature by cooling you off if you get too warm. Featuring a 6 in. Box and satin Cord to create optimal loft so you not only stay cool but also comfortable. Size: full/queen. Color: White.