Esther Williams Swimwear Solid Vintage Sheath Swimsuit Esther Williams one-piece solid vintage sheath halter swimsuit. Fully lined in front with Lycra, tummy control power net, soft foam cups, and 3/4 inch elastic band under bust for support. No wires. Fabric provides some stretch. Sizes run small, we recommend purchasing one size up. Materials: 80% Polyester 20% Spandex. Care Instructions: Hand wash. Dry flat.