Thank you for looking at my many wonderful items! This is a Christmas thong purchased in Italy. I am listing it because I did not use it! Although it is cotton, the front is made of lace (it is see-through as there is no cotton lining). From the crotch, the back is made of cotton rib. The size is listed as small, but it is about a Japanese M size. I am quite a clean freak, so I am careful about hygiene, but this has been stored in a personal closet. This is just my personal opinion, so please refrain from purchasing if you are sensitive. Also, I apologize for the length, but please read my profile as well. Thank you very much.