This is a novelty item from merry jenny. It seems to be able to keep things both hot and cold, so I think it can be used all year round. It's new and unused, but I took it out of the box once for the photos. Although it is unused, please refrain from purchasing if you are sensitive to such things. I will ship it in its original box. Immediate purchase is welcome ◎ Price reduction is not possible, so I apologize, but please refrain from comments asking for a discount.