Used only a few times, about 5 times, and the heel soles show little wear, so I think they can still be used for a long time. There are no noticeable stains or scratches. A cushion sticker to prevent blisters was used on the heel, but it has been cleanly removed. There may be some stickiness, but in my personal experience, I don't think it will bother you when wearing them. As for the size, they are made large. I think they fit around a 26.5-27.5 size. Although they are in good condition, please purchase only if you understand that they are used items. Due to the nature of used items, this product is non-refundable and non-returnable.