TENCEL™ sheets are made from lyocell and modal fibers. Lyocell and modal fibers are made from regenerated cellulose pulp from wood fibers (beechwood specifically for the modal fibers).¹ They are made using dissolution technology that employs chemicals which both biodegradable and have no harmful byproducts. This process also uses very little water, and the chemicals are 99% recovered to be reused. To make the fibers, wood pulp is dissolved, pushed through small holes to create thread, chemically treated, and then rinsed and spin dried. The threads can then be spun into yarn and woven into cloth for bedsheets. The process is very safe and creates stronger, softer, more breathable, and more thermally resistant sheets compared to another form of regenerated cellulose fiber: rayon.²