Vivier cardigan. Ultimate luxury! The Vivier is a heavyweight 6-ply, ribbed, open-front cardigan with belt, fold-over collar, and pockets at the hip. 100% Scottish cashmere, knit and hand-finished in Scotland. Hand wash. Caci’s review: Crème de la crème. The warmest sweater in the store -- luxurious, sumptuous, and chic.