Cotton-Top, Cotton Fill, Cotton Skirt - All Around Cotton! Top Fabric - 100% Cotton Satin High Quality Cotton Fill with Cotton Skirt Fits Added Depth Mattresses and Machine Washable Dimensions: 39" x 80" x 12" Add an extra layer of comfort and protection to your bed. This All Around Cotton King Mattress Pad is made with top-to-bottom high quality cotton, including the fill and skirt. A machine washable, ideal product to create a barrier between you and your bed.