Percale stands for the weaving process in which the fabric is woven by. In percale the yarns are woven in one over one, unlike Sateen where it"s four over one. The one over one (percale) weave create a much even, stronger, denser & softer fabric, which can stand the test of time and gets better and better feel the more you wash it. It"s just like your favorite old shirt, the more it"s laundered the softer and durable it gets. * 300 Thread count single Ply * 100% Egyptian cotton Percale. * Fitted sheet made with elastic all around fits up to 16" mattress * Machine wash *King set includes flat sheet (80" x 94"), fitted sheet (54" x 76") and two pillowcases (20" x 30")