This is a Sumikko Gurashi vacuum-insulated stainless steel pair tumbler set that I won from a UFO catcher game at an arcade several years ago. I'm selling it because I have too many cups and don't see myself using these. It's unused, but I have opened the box once. I've stored it in the closet for several years since I got it, so the box has some creases. Please understand the above before purchasing. Item/Type: Tableware