Plain colourways : 100% cotton. Colour Ash Heather : 98% cotton / 2% viscose. Oxford Grey colourway : 90% cotton / 10% viscose. Colours Wine Heather ; French Navy Heather ; Green Marble Heather ; Cloudy Blue Heather colourways : 80% cotton / 20 % polyester. And Grey Heather colourway : 70% cotton / 30% polyester. All colourways are made from in conversion organic cotton. Ribbed crew neckline with elastane. Matching taped neck. Tubular. Twin needle finishing at cuffs and hem. Certified STANDARD 100 by OEKO-TEX®N° CQ1007/7, IFTH.