The batiks fabric for the majority of US manufactures don't have a clue of what a batik fabric is. If you reseach outside of the US, they are 100% cotton, so soft, so supple you don't even have to iron the fabric. No wrinklinng, so wash and dry, you'd think they have polylester in them but they are 100% cotton. I think from my own experience, they are a lighter weight cotton, yet 100% cotton for the warmer climates and they are truely remarkable fabric. Whenever I travel overseas, I look at all the fabric stores...so different.