I bought these a few years ago, but I've only worn them once and haven't used them since. The black parts are rubber, so they're stretchy and should be comfortable for people with bunions! Since there's no lining on the soles, you might want to have some added to prevent wear and tear! There are no noticeable stains on the surface, but there's a slight scratch on the part with the Diana logo. However, I think it wouldn't be noticeable when you're wearing them! Please contact me if you have any questions. Thank you.