Plain colourways: 100% cotton. Grey Heather: 70% organic cotton/30% viscose. All colourways are made from organic cotton. OCS (Organic Content Standard) and OCS Blended certificates are issued by Ecocert Greenlife. Ribbed crew neck. Contrasting chest pocket on left side. Contrasting taped neck and side slits. Twin needle finishing on cuffs and hem. No brand label at neck, only size tag for easy relabelling.