Modal is a second generation regenerated cellulosic fiber and a variation of rayon (viscose). Lenzing’s TENCEL™ branded Modal fibers are extracted from naturally grown beech wood grown in PEFC-certified (Programme for the Endorsement of Forest Certification) European forests. Modal fibers with a high wet modulus were originally developed in Japan in 1951. Lenzing started selling modal fibers in 1964. In 1977, Lenzing started using an environmentally responsible integrated pulp-to-fiber process, which is self-sufficient in energy and recovers co-products from component parts of the wood. This flexible fiber is renowned for its exceptional softness.