superdown Zarah Strapless High Slit Midi Dress in Rust. - size XL (also in M) superdown Zarah Strapless High Slit Midi Dress in Rust. - size XL (also in M) 65% cotton 30% nylon 5% spandex. Hand wash cold. Partially lined. Boned bodice. Front seam slit. Hidden back zipper closure. Neckline to hem measures approx 35 in length. Imported. BTWR-WD501. BTD319 U18. superdown is a contemporary label offering on-demand, on-trend, on-social apparel. Always on the pulse of the latest styles, superdown is the go-to for aspiring, trendy, fashion-loving babes who are #superdown for anything.