Speedo Women's 4/30 Solid Flyback Training One Piece Black Swimsuit New with tags Sizing: Our competition swimsuits are engineered to fit tightly on the body in order to reduce drag, and will feel slightly looser in the water. Swimmers wishing to achieve a looser fit are encouraged to choose a larger size. Engineered from our exclusive, longest lasting and best-selling Endurance+ fabric Unique four-way stretch provides body-hugging fit, , and soft comfort Chlorine resistant with superior color retention designed to lasts far longer than conventional swimwear Front liner Fabric: 50% Polyester/50% PBT