This oversized plain knit sweater is crafted from wool in a loose fit and relaxed silhouette. , RWS certified, with the addition of nylon which gives a feeling of lightness. With a round neckline and ribbed cuffs. plain knit 3 sg certified to the Responsible Wool Standard (CU 815347) wool comes from sheep , not subject to mulling and certified to the Responsible Wool Standard (RWS) independent and voluntary standard that guarantees that wool from certified farms can be correctly labeled and traced through all stages of processing. The purpose of the RWS is to protect sheep, which provide wool and soil on which they graze.