Enza Costa Cashmere Halter Turtleneck in Olive. - size XS (also in L, M, S, XL) Enza Costa Cashmere Halter Turtleneck in Olive. - size XS (also in L, M, S, XL) 85% cotton 15% cashmere. Made in USA. Hand wash. Mockneck styling. Raw-cut rolled hem. ENZA-WS1006. CJ3686. 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.