Made to make a splash. 3-in-1: skirt, cover-up and swim bottom. Yup, this swim skirt has its own built-in brief. Made of SurFlex™, our resilient, colorfast, UPF 50 swim fabric that shadows our every move, but never stretches out. By Title Nine. XS(2), S(4-6), M(8-10), L(12-14), XL(16).