Brand new, unopened Netsamashīto (Cooling Sheet) for Adults, 64 sheets, Kobayashi Pharmaceutical (16 sheets x 4 boxes) Expiration Date: June 2027 «Product Features» ● Ready to use immediately for sudden fevers in the family. ● Cooling power for approximately 8 hours with gel sheets containing cooling granules. ● Adheres firmly to the forehead. Doesn't easily peel off even when tossing and turning in bed. ● Gentle, weakly acidic sheet for the skin. The commitment of Netsamashīto (Cooling Sheet) that works for a long time: 1. Commitment to removing heat The abundant moisture contained in Netsamashīto absorbs heat and evaporates, continuing to cool the skin temperature by -2°C even after approximately 8 hours. 2. Commitment to coolness Contains "cooling capsules" with granules. The coolness gradually takes effect later, maintaining the cooling sensation for a long time. ※ Even if the sheet feels warm, the cooling effect continues if it is still moist. (The gel uses a water-soluble polymer base that is gentle on the skin.)