100 % OCS 100 certified organic cotton - Organic Content Standard (Wine Heather, Ocean Blue Heather and French Navy Heather : 80 % OCS Blended certified organic cotton / 20 % polyester. Grey Heather : 70 % OCS Blended certified organic cotton / 30 % viscose). Slim fit, Ribbed neck and cuffs. Placket with 4 matching buttons. Twill tape on inner neck and side slits. No brand label at neck, only size tag for easy decoration access.