I purchased this a few years ago and used it about twice. While there's a sense of use and some wrinkles from storage, there are no visible damages like holes or noticeable stains. Although I haven't used it much, it's been several years since I bought it, and I haven't used it recently, so I'm honestly not sure about water resistance. There's a faint rubber smell, but nothing unpleasant. I think it was a 2mm model, but I don't remember exactly.