Take your performance to a higher level with Arena’s newest racing design: Powerskin ST 2.0. They created ST as a tech swimsuit for competition and training for swimmers of all levels. This upgraded women’s open-back one-piece has a reinforced center strap for better upper-body support plus the shell fabric and new durable lining offer enhanced compression to targeted areas. Comfort and body stability are built-in with ergonomic flat lock seams in a strategic pattern that lifts you underwater. More resilient and hydrodynamic than ever, we love the edgy look of the contrasting seams. A FINA-approved design.