Just heat it in the microwave♪ [New & Free Shipping] Yutapon for Microwave L size 2 pieces Hakugen Earth Co., Ltd. Will be shipped in a separate box or bag. Instructions are printed on the main unit. ● This product requires a microwave. ● This is a gel-type hot water bottle that provides comfortable warmth just by heating it in the microwave. ● Supports comfortable sleep during the cold season. ● Warmth lasts for approximately 7 hours. ● Size when in use: 23cm x 35cm. ● Hot water bottle type [Caution] This product is not suitable for oven or water bath use. ※ The main unit is not originally packaged in a plastic bag, but it is a new and unused item. ※ We do not accept price negotiations. Hot water bottle Body warmer Yutapon Warm-up activities Sensitivity to cold Sound sleep Improve cold sensitivity Warming Low body temperature Cold prevention