FYI : https://www.tencel.com/about

Known for their natural comfort, TENCEL™ Lyocell fibers are versatile and can be combined with a wide range of textile fibers such as cotton, polyester, acrylic, wool, and silk to enhance the aesthetics and functionality of fabrics. Unique physical properties of TENCEL™ Lyocell fibers lead to their great strength, efficient moisture absorption and gentleness to skin.