I bought too many, so I'm selling: [Brand New, Unused] Hakugen Earth Range de Yutapon 2x the size, L size, with box Set of 2 Simply heat in the microwave for comfortable warmth, warming cold feet thoroughly. When used in a futon, the warmth lasts for about 7 hours. Reusable. Comes with a washable, fluffy cover. Simple packaging to reduce shipping costs. Can also be used for dogs and cats. We use them at home too. ★Please also see my profile.