Range de Yutapon Sumikko Gurashi with Cover #Mikan Yutapon [Product Introduction] Simply heat it in the microwave for a comfortable warmth that will thoroughly warm your cold feet. It's a soft and comfortable gel-type hot water bottle. The warmth lasts for about 7 hours. (This is a guideline when used inside a futon. The duration may vary depending on room temperature and usage environment.) It comes with a washable dedicated cover. It can be used repeatedly. [About Shipping] The main body and cover will be sent by post (anonymous delivery/Yu-Packet Post). The outer box is not included. If you wish to purchase multiple items or combine purchases, please contact us.