These thick and fuzzy sheets are double brushed for superior softness and warmth. Our midweight flannel is made from tightly woven, high-quality long staple cotton fibers for long-lasting durability. Made with organic cotton and dyes, organically grown cotton uses less water and produces fewer greenhouse gasses than conventionally grown cotton. These 100% cotton sheets are designed to shrink after the first wash. To ensure a perfect fit, please wash before use.