Tencel is a biodegradable fabric made of wood pulp cellulose. The unique closed loop process makes Tencel the fiber of the future since the solvent used is recycled by almost 100% in the closed loop process. These tencel duvet covers have unique moisture control capability to keep you cool and comfortable as you sleep, even on the warmest nights. The sensuously smooth surface of Tencel doesn't just feel good, it's also especially kind and gentle on the skin. In addition, the eco-friendly Tencel fibers make the product resilient. Easy care: machine wash cold water, tumble dry low.