Women's Project Heavy Flannel Red Rock 1
Women's Project Heavy Flannel Red Rock 2
Women's Project Heavy Flannel Red Rock 3
Women's Project Heavy Flannel Red Rock 4
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Women's Project Heavy Flannel




A burly flannel that gets better and softer with age. View Details

Color: Red Rock

Color Options


Size Options
  • Free economy shipping for orders over $99+

BD Athlete Kelly Haplin prepares to chop wood.
Soft-touch cotton plain weave.
Designed to be worn in combination with other layers, it's ideal for cold-weather bouldering sessions.
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

  • 100% organic cotton
  • Brushed cotton plain weave gets softer with time
  • Two chest pockets
  • Roomy, slightly boxy fit
  • Fit: Regular
  • ECO Label Status

Practical 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.


Protecting the places we love is as important to us as building the gear to take you there. Utilizing sustainably produced raw materials is a cornerstone to our approach and foundational to this commitment. Styles carrying the ECO label status are made of one or more of Black Diamond's targeted sustainablity attributes.

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).

Display Weight
Size Range
0.985 kg / 34.74 ozXS-XL