![](https://blackdiamond-prod.zaneray.com/cms/images/6eed557e-ef1d-4f19-9700-d9268eff6307_CA_20230331_117246.jpg?auto=compress,format&rect=408,0,907,907&w=907&h=907)
![](https://blackdiamond-prod.zaneray.com/cms/images/faea73fb-4070-4b9a-97ec-3562c53c89c2_CA_20230331_117353.jpg?auto=compress,format&rect=0,322,907,907&w=907&h=907)
The Heavyweight Project Flannel is comfortable, burly, and only gets better with age. A boxy, brushed organic cotton button-up that is designed to be worn with other layers, this flannel is ideal for cold days in the boulders.
Product Features
- Double chest pockets
Lifetime Warranty
We trust what we make because we use what we make. All Black Diamond softgoods are warranted against defects in materials and construction for the practical lifetime of the product.
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).