100% cotton - 4 layer cotton muslin Made from 4 layers of super soft OEKO TEX Certified cotton muslin, these burp cloths are ultra absorbent, gentle when wiping baby's face and skin, and a generous size to cover the whole shoulder - protecting your clothing from spills. Muslin is extra durable too, made to handle being washed and dried over and over. A generous 20cm x 60cm size (2 pack).