Proenza Schouler Eco Cashmere Cardigan. The Eco Cashmere Cardigan in Citron is crafted in soft, sustainable cashmere to a cropped silhouette. Features exaggerated front patch pockets and a center-front closure with contrast resin buttons. V-neck. Long sleeves with dropped shoulders and split cuffs. Ribbed trims. Relaxed fit. 100% sustainable cashmere.