Highlights The ultimate layering piece, this Haider Ackermann tank is knit from a blend of wool and angora. Anthracite semisheer knit. Scoop neckline; racerback. Pullover style. Wool/angora. Made in Belgium. Designer About Haider Ackermann: Avant-garde Colombian designer Haider Ackerman has won fans for his forward-thinking silhouettes and draping. The graduate of the Antwerp Fashion Academy of Fine Arts (whose alumni also include Dries van Noten and Ann Demeulemeester) has enjoyed success as a cutting-edge designer since he launched his line in 2001.