A first aid sheet that cools sudden heat with a cooling gel that cools down suddenly. After 10 hours of cooling test (based on our test). Weak acidic and skin-friendly sheets that wont get rashed. Improved sheet for improved adhesion (compared to our previous models), fits perfectly on your forehead. Made in Japan. Use it after cooling it in the refrigerator for a more cooling effect. (DO NOT PUT IN THE FREEZER) This is not a medicine, so please use it as a heat sinking aid etc. If the fever is continued to occur, it is recommended to consult a physician or pharmacist.