The Microcell sheets feature 3M Scotchgard Moisture Management Treatment which wicks away moisture to help keep you drier and clearner. Madison Park MP20-2386 3M Microcell Sheet Set - Grey; King 100 Percent Polyester Microcell Sheet Set.FeaturesPattern - 3M MicrocellColor - GreyMaterial - 100 Percent Polyester, 120GSM Microcell, With 3M Moisture Management TreatmentSize - KingIncludes 1 Flat Sheet, 1 Pillowcase and 1 Fitted Sheet Best of all, the 3M protection lasts wash after wash. It also has a stain release effect which helps stains wash away easily so you no longer have to worry about stubborn stains.