... Lycra®, Coolmax® and Cordura® and now Sorona®. For the past 80 years, DuPont fibers have improved comfort, beauty, and performance and ... this unique fiber. Sorona® is also known as 3GT or PTT (polytrimethylene terephthalate).As a renewably sourced fiber, Sorona® can ... fiber single jersey fabric,sorona spandex tricot fabric for swimwear,PTT/Spandex weft knitted fabrics for yogawear. Hope our eco- ...