These are over-the-knee boots I bought from Avail two years ago. The size is M, and they fit me perfectly, as I usually wear a 24.0-24.5cm shoe size. They come up over my knees, and I am 155cm tall. They are made of suede material and I think they are unlikely to slip down. There are no noticeable scratches or stains, but please refrain from purchasing if you are sensitive to items that have been stored at home.