Made from brushed organic cotton, the Project Flannel has everything you're looking for in a perfect all-weather button-up. It's soft and comfortable, with an updated fit that provides room to move.Specifications:- Weight: 418 g- Material: Cotton Brush Flannel Woven (100% Cotton)Technology:Organic Cotton:- Our organic cotton is certified to come from farms not using synthetic fertilizers, biocides, or GMO seeds. These along with other required better farming practices result in cotton production having a reduced impact on the environment as a result. Organic cotton used in the apparel line is primarily certified by GOTS (Global Organic Textile Standard).