twenty Superior Mock Neck Dress in Black. - size L (also in ) twenty Superior Mock Neck Dress in Black. - size L (also in ) 96% modal 4% spandex. Dry clean only. Fully lined. Jersey knit fabric. Hidden back zipper closure. TWER-WD58. NV5T 026. 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.