The Nike Swim Nylon Core Solids Lingerie Tank Fast Back Swimsuit is an excellent choice for competition and practice. Its feminine, yet functional design offers a streamlined fit for reduced drag and more efficient performance in the water. It's made with Nike NX material a durable, colorfast and chlorine resistant fabric.Fabric Nike NX material. 81% Nylon / 19% Spandex.Features Women's one piece swimsuit. Thin straps: For comfort. Excellent shape retention. Lingerie tank style. Criss-cross lingerie straps provide enhanced range of motion and chafe-free comfort. Swoosh trademark logo at chest.