Modal is a licensed fiber by Lenzing. It's part of the rayon family. Modal is made from beech wood, grown on tree farms that practice sustainability. The Modal manufacturing process uses fewer chemicals and less water, and produces less waste than traditional rayon processes. it's often used in woven fabrics, but as a jersey knit it is wonderfully soft and can be used as you would use any other jersey fabric. It makes especially nice high-end tee shirts, innerwear and loungewear. It is softer than regular rayon jersey.