Premium Percale no iron, easy care water bed sheet sets. Minimum 200 thread count blend of 50 percent cotton for natural softness with water wicking and 50 percent polyester for no-iron convenience. Durable and long lasting quality and comfort even after repeated washings. Our percale waterbed sheets are ideal for people who want soft but durable sheets. Say goodbye to your old waterbed sheets that would develop those little fuzz balls. Our percale waterbed sheets are guaranteed not to pill on you.