J.Crew Women's $118 Plunging Scoopback One-Piece Swimsuit in Polka Dot K3016 A sexier, striped version of our best-selling swimsuit, thanks to a lower back and thinner straps. Polyamide/elastane. Lined. Our swimsuits are machine washable, but we recommend hand washing as it helps keep the fabric and the shape of the suit looking newer, longer. Swimsuits are machine washable, however it is recommended to hand wash as it helps fabric to keep it's shape better. This swimsuit is new and unworn.