We updated these trunks with a modern fit and kept the old-school drawstring waist. For this pair, we added a mesh lining to keep you comfortable in the water (and when you're lounging poolside or on the beach). Our lightweight stretch swimsuits are crafted from 57 percent ECONYL® yarn, a 100 percent regenerated fiber spun from nylon waste including discarded fishing nets. It features a water-repellent finish made without fluorocarbons or PFCs.