These shirts are made of 100% certified organic ring-spun cotton and will look great on men or women. - Perfect for eco conscious customers- 100% organic ring-spun combed cotton- Regular fit- 5.3 - 5.5  oz/yard² or 180 - 187 g/m²  Made of 100% GOTS certified organic cotton. Organic cotton is naturally grown without any use of chemical pesticides or fertilizers and has not been genetically modified (non-GMO). Organic cotton is harvested and produced in a way that benefits the environment, creating biodiversity and promoting good health and quality of life for farmers and their communities.