Our 100% viscose from Bamboo fabric is smooth and breathable against your skin. These cooling sheets are degrees cooler and twice as soft as ordinary cotton. Our luxurious tight twill weave finish is the most durable for bedding. The fibers are resistant to mildew and bacteria, so you sleep fresh and clean at night. Our sheets are so incredibly soft, you'll be on a BedVoyage cloud of comfort all night long. Set includes 1 Fitted Sheet, 1 Flat Sheet and 2 Pillowcases (1 for Twin Xl) packaged inside a reusable storage bag made from repurposed scrap fabric.