I took a chance when I ordered these----since I sleep only on 100% cotton.  The went through the washer and dryer beautifully.  Then I gave them to my son.  Just could not do the microfiber thing.  I have not heard any complaints since, so I'm guessing all is good.  I will say that the hemming seemed "off" and if I had sewn these, the stitching of the hem would have come out and been redone without the slant puckering.