A Birkenstock masterpiece from the 90s. When new, it's worth about 60,000 yen. I usually wear 28.5, but these fit with room to spare. Made of real calf hair. The soles are easy to walk in, and I don't think they'll wear down much. It's a super rare masterpiece that can't be reissued now due to animal protection concerns. There's some shedding of the calf hair. Please see the photos. I think it won't bother those who are used to vintage clothing. Purchased for 30,000 yen.