Linen is the natural moisture wicking fiber. These fibers are tube shaped which moves moisture away from your body so you stay dry. These sheet sets designed with deep pockets so they fit larger mattresses. The sheets come in a variety of colors to match your casual lifestyle. All sheets and pillowcases are machine washable. You can rest assured this program is made responsibly with OEKO-TEX Standard 100 Certification with certificate 14.HIN.38767 as certified by Hohenstein.