Purchased overseas around 2024 (new). Since my child frequently spit up milk and drooled a lot, this large-sized bib was much more absorbent than round bibs and was useful for a long time. The surface is cotton, and the back is a waterproof vinyl material. This is a bib that was actually used by my child, and there are some yellow stains in a few places (please check photos 1 and 2). Thank you. #WaterproofBib #LargeBib #Bib #CottonBib