Any cotton fabrics have the possibility of being a bleeder. I prewash all fabrics to eliminate any questions of bleeders and if I find one, I pretreat with Retayne....that problem is then solved. I find that using a batting of mostly cotton is what makes the crinkly look...some cotton battings will shrink 3-5%, some more. Combine that shrinkage with a closer quilting and you get the desired look. The quilting secures the layers together, then washing/drying shrinks the batting and pulls the fabric creating those little puckers and that beautiful finish that most of us love!