These 10 Cozy Amazon Fashion Finds Are My Go To This Winter "Soie d'Hiver" Turtleneck Sweater 23 Chic Turtleneck Sweater Outfits: Dresses, Vests, and Layering Ideas Relaxed Cashmere Turtleneck Sweater Banana Republic. This gauge 5 turtleneck is a masterclass in textural warmth, featuring the "Soie d'Hiver" design in 100% pure silk. The thick gauge knit and rib trim detailing offer a sophisticated visual depth, celebrating the houses unparalleled ability to transform noble silk into a protective winter essential. 100% pure silk gauge 5 knit Soie d'Hiver architectural motif Rib trim turtleneck, cuffs, and hem