Kassius Alpaca-Blend Ribbon Cardigan Living in the Kassius Cardigan. This sweater arrives with a trending boyfriend fit to keep you cozy and cute all winter long. The cardigan is designed from a cashmere wool blend with chunky Peruvian cable detailing and a beautiful charmeuse ribbon threaded throughout that ties into a sweet bow LTKWorkwear LTKSeasonal LTKGiftGuide