Linen Let nature do the work. Linen is a natural insulator and will help regulate temperature. Built to last. Combed, ring-spun yarn provides a tight weave that is strong and durable as well as breathable and moisture absorbent. Bed-making made easy. Fitted sheet is fully elasticized for a snug fit, and bottom tag ensures that it’s right side up, every time. Packaged in a reusable tote. Machine washable.