Plunge Bralette with interchangeable strap. All of our strap-its should be hand washed in cool to warm water in a mild soap solution. Please air dry. Strap Its Fabric: 79% polyester and 21% spandex Bra Fabric: 92% nylon and 8% spandex Wear your straps in a variety of ways: Conventional, halter, racer back Straps are between 13.5 and 15 inches. All of our straps are fully adjustable to fit just about any size. The tank tops and bralettes are one size fits most.