J. Crew Ruffle Plunge One-piece Swimsuit in Navy Blue. This supersweet ruffled version of J. Crew’s deep-V swimsuit is crafted from a special fabric that incorporates recycled nylon. Plus, its lining is made with a recycled polyester that is crafted from recycled plastic bottles, yarns and fabric scraps. Built-in UPF 50 sun protection. No signs of wear.