Have you been searching endlessly for an all-cotton mattress pad only to find that they have polyester fill or a polyester backing and skirt. The good news is that your search is over. This mattress pad has a 100% cotton percale top. We quilt the top with a generous amount of cotton fill. Then we go the extra step and add a 100% cotton percale reverse. The skirt is also cotton with just a drop of Spandex to ensure a snug non slip fit on your mattress.