When you select a set of sheets, you probably survey them for the traditional hallmarks of quality. High thread count is important, of course, as you don’t want those sheets to turn threadbare after a few wash cycles. The type of cotton fibers matters as well. As many people are already aware, Egyptian cotton sheets contain a long fiber that adds up to preeminent softness and comfort.

But it also pays to think outside the box while sheet shopping. Did you know, for instance, that not all sheets contain the same type of thread weave. King percale sheets feature an especially tight weave with an excess of threads. They are often made of pure cotton, but polyester and linen are occasionally used as supplementary fabrics. Percale sheets are characterized by a smooth, crisp feel, and they grow stronger with use.