This is a nursing tank top from Akachan Honpo. It's 100% cotton and comes in a set of two. I bought it at the store. I only used it a few times because I switched to formula feeding right after giving birth, but please understand this before purchasing. Please be aware of any folding wrinkles. Please refrain from price negotiations. I will offer a discount if you purchase it with other items, so please feel free to comment!