Enza Costa Rib Tank Dress $145 NWT Size M Enza Costa Silk Rib Tank Midi Dress. Sleeveless. Scoop neck. Pullover style. Slim fit. Rib-knit. Midi-length. 87% viscose, 10% silk, 3% lycra. Machine wash. Made in the U.S.A. Sleeveless. Scoop neck. Pullover style. Slim fit. Rib-knit. Midi-length. 87% viscose, 10% silk, 3% lycra. Machine wash. Made in the U.S.A.