This top is made from soft merino RWS wool with a 1x1 fine mesh ribbed structure and has a slightly sheer look.. The model has a fitted cut and raw edges at the hem and cuffs. Wool comes from sheep , not subject to mulling and certified to the Responsible Wool Standard (CU827977) 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.