Enza Costa Silk Rib Bold Tank in Pink. - size S (also in M, XS) Enza Costa Silk Rib Bold Tank in Pink. - size S (also in M, XS) 87% viscose 10% silk 3% lycra. Ribbed jersey fabric. Made in USA. ENZA-WS879. SRS3461. 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.