Old Navy Womens Soft & Smooth Surf Swim Bikini Bottom - Quick Dry Very flattering & high quality dri-fit swim bottom! Shell: 84% nylon, 16% spandex; Lining: 100% polyester; Hi-tech material for quick dry and comfortable wear Alluring fit; Full lining for comfortable wear. Elastic waist with drawstrings tied at sides for adjustment. High quality fabric and great construction make this an excellent product!