These are the 600-thread count king pillowcases made from 100% Tencel, a natural fiber softer and smoother than cotton ensuring a silky smooth sleep. Crafted from sustainably harvested eucalyptus trees, the fiber’s cellulose construction results in a fine hand softer than cotton or modal, making these pillowcases ideal for those with sensitive skin. Naturally hypoallergenic and static-resistant, the fabric also wicks away moisture from the skin for a pleasant, restful sleep. The fiber’s smoothness provides an even drape without wrinkling and a lasting durability. Taupe. King Size Pillowcases.