This black Haider Ackermann Invidia wool cashmere-blend turtle neck sweater has been designed for the brand's Pre-Fall 17 collection and features a ribbed turtle neck (fun fact of the day: turtle necks were originally worn by knights to prevent rashes and chafing from chainmail and helmets). Designed from a sumptuous wool cashmere-blend, this Haider Ackermann jumper features long sleeves and ribbed edges, with white stitching on the rear of the arms. You'll spot us teaming ours with Ann Demeulemeester and Rick Owens in Paree.