Our iconic World's Most Comfortable Thong® now in our new ECO Rx™ Lite lightweight jersey. This thong sits higher on the hips. ECO Rx™ Lite is made from TENCEL™ with REFIBRA™ technology. incorporating pre- and post-consumer cotton textile waste and TENCEL™ Lyocell made out of wood pulp from sustainably managed forests. This thong sits high on the hips with our signature. ultra-flattering V-waistband made with upcycled Repreve® nylon.