Made from 100-percent Egyptian cotton in a 300-thread-count Sateen weave, these pillowshams offer a smooth surface with an understated luster, and they pair well with both solid and patterned bedding. Closely woven with single-ply yarns, the fabric offers a lighter weight and flexible drape for attractive display. Sateen: Sateen fabric has a soft, satin-like finish resulting from a four-over-one thread weave. Standard weaves, like percale, use a one-over, one-under stitch. The four-over weave puts more threads nearer the surface, resulting in a softer, warmer surface. Sateen fabrics are most often made of mercerized cotton, but can be made of other fabrics, including cotton blends, polyester, and rayon. Mercerized threads give sateen fabrics a higher luster. Mercerization, named for process-creator John Mercer, involves treating threads with a cold concentrated sodium hydroxide solution. Mercerization also increases strength, dyeability, and resistance to mildew, as well as reduces lint. Sateens can be produced in light and heavy weights, and are ideal for bedding.