Enza Costa Rib Long Sleeve Step Hem Dress in Cognac. - size XS (also in L,M,S) Enza Costa Rib Long Sleeve Step Hem Dress in Cognac. - size XS (also in L,M,S) 94% viscose 6% spandex. Hand wash cold. Unlined. Rib knit fabric. Side seam slits. Made in USA. ENZA-WD260. 5BR5200. Designer of Enza Costa, Rogue, is a Canadian born based in Los Angeles. The line consists of comfortable yet luxurious fabrics like silk, cashmere, and supima and definitely brings to the collection a sort of understated sheer elegance. A staple must-have in any wardrobe, her tees are featured on celebs like Kristen Bell and Jennifer Lopez.