twenty Superior Midi Dress in Black. - size S (also in ) twenty Superior Midi Dress in Black. - size S (also in ) 96% modal 4% spandex. Hand wash cold. Unlined. Partial front snap button closure. Ruched side seams. TWER-WD59. NV5V 027. Twenty has transformed a fashion essential by giving the classic knit tee a luxurious and modern take. Crafted from amazing fabric, twenty creates super soft tees, knit dresses, bodycon skirts, and cozy sweatpants that will quickly become everyday staples in your wardrobe.