Brand from Japan: Kobayashi. Normal fever! Long lasting warmth.Stably warm for 24 hours.Warmth lasts 24 hours.Perfect for keeping your hands warm in the winter, during outdoor work, leisure, commuting or school by placing them in your pocket.The high temperature is 65 degrees and the average temperature is 51 degrees.How to use:Do not use while sleeping.Do not use on futon cushions or heaters as they may become hot.Do not use if you have diabetes or other temperature or circulation problems.If it is difficult for young children or people with physical disabilities to react to the usage, please ask those around you to pay attention when using it.People with sensitive skin should be especially careful about low-temperature burns.Do not place directly on skin.If it feels too hot, stop using it immediately.If burn symptoms occur, stop using the product immediately and consult a physician.The maximum temperature, average temperature and duration of this product are values measured in accordance with