For fevers, headaches, or overheating, Be Koool cooling gel sheets beat ice packs and iced towels cold. Be Koool gel sheets lower skin temperatures by up to 4 degrees. And that cooling relief not only lasts for up to six hours, the gel sheet directs all that coolness where you place it. Because unlike messy wet towels and ice packs, Be Koool comfortably adheres to the skin.