Plain colourways : 100% cotton. Wine Heather, Ocean Blue Heather and French Navy Heather: 80% cotton/20% polyester. Grey Heather: 70% cotton/30% viscose. All colourways are made from organic cotton. OCS (Organic Content Standard) and OCS Blended certificates are issued by Ecocert Greenlife. Fashion slim fit. Ribbed crew neck. Matching taped neck. Twin needle finishing on cuffs and hem. No brand label at neck, only size tag for easy relabelling.