X by NBD Frost Midi in Metallic Silver. - size M (also in ) X by NBD Frost Midi in Metallic Silver. - size M (also in ) Self: 66% rayon 22% poly 16% nylonLining: 95% poly 5% spandex. Dry clean only. Fully lined. Adjustable shoulder straps. Hidden back zipper closure. Metallic lame fabric. Asymmetrical ruffled hem. XBYR-WD189. XND86 S18. With sexy silhouettes and daring cut-outs, X by NBD is the party girls go-to brand for the perfect dress. With lace overlay details, plunging necklines and sweet scalloped edges, X by NBD gives a modern makeover to cocktail dresses.