100% 700 Thread Count Luxury Soft Cotton (100% Cotton Composition, Not Microfiber) Silky Sateen Sheet Set, Extra Deep Pocket, King, White Microfiber Sheet set is surprisingly soft, comfortable, breathable, exceptionally durable, wrinkle and fade resistant; it stays fresh, cool during hot and warm during cold nights while holding mattress firmly in the right place With Oeko-Tex standard 100 compliance product, the sheets are free from harmful substances and has a high tensile strength, making it strong, durable and less likely to rip or tear Sheet set is made from mercerized fabric for longevity and pre-shrunk for shape retention; it is machine washable tumble dry low