I was recently checking Pinterest for quick and easy kids quilt patterns when I saw a reference to "crinkle cotton" with (I think) flannel in making receiving blankets. Your post piqued my interest so I investigated. I am quite sure NOT at all the same as batiks because my handy, dandy Fabric Savvy essential guide for every sewer by Sandra Betzina (love this book) indicates it is suitable for medium width pull-on pants and unstructured shirts, i.e. clothes good for traveling in. Hope this helps. Perhaps the "batik" part is just the coloration of the fabric? And yes, crinkle cotton is described as being crinkled through a heat setting process.