Mens Soft & Comfortable Dri-Fit Bikini Brief Swim Trunks 80% nylon Great Fabric: 80% nylon, 20% elastane; Hi-tech material for quick dry and comfortable wear. Very high quality dri-fit swimwear. Fully lined front panel. Elastic waistband with drawcord inside for adjustment. A fitted brief with lots of stretch for unrestricted water movement.