A rugged organic cotton button down, the Project Twill LS is a timeless style designed to be worn every day, in any season.
Our organic cotton has a reduced environmental impact. Our organic cotton has a reduced environmental impact. 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). Learn More
We trust what we make because we use what we make. We trust what we make because we use what we make. All Black Diamond soft goods are warranted against defects in materials and construction for the practical lifetime of the product. Learn More
From clean climbing, to conservation, Black Diamond is committed to protecting the people and places we love.
Overall rating: 4.6666665 / 5 from 3 reviews.
Review topics: [weight, structure, piece, shirt].
"I love this shirt and ordered it just in time for the fall/winter season. I've been layering it over a long sleeve t-shirt and absolutely loving it. The cloth is a good mid-weight, giving the shirt a really nice structure which passes for business casual for work. I've also worn it over leggings for hikes and got compliments from my hiking buddies. It's a really versatile piece great for fall!"
"Nice looking but tissue is a bit hard"
"Great flannel"
| Size | Chest | Hip | Arm Length |
|---|---|---|---|
| XXS | 31 - 32 in 78.5 - 81 cm | 32.5 - 34 in 87.5 - 91.5 cm | 29.5 in 75 cm |
| XS | 32.5 - 34 in 82.5 - 86.5 cm | 34.5 - 36 in 87.5 - 91.5 cm | 30 in 76 cm |
| S | 34.5 - 36 in 87.5 - 91.5 cm | 36.5 - 38 in 92.5 - 96.5 cm | 30.5 in 77.5 cm |
| M | 36.5 - 38.5 in 92.5 - 98 cm | 38.5 - 40.5 in 97.5 - 103 cm | 31 in 79 cm |
| L | 39 - 41.5 in 99 - 105.5 cm | 41 - 43.5 in 104 - 110.5 cm | 31.5 in 80 cm |
| XL | 42 - 45 in 106.5 - 114 cm | 44 - 47.5 in 111.5 - 120.5 cm | 31.5 in 80 cm |
Designed to fit slim to the body for an athletic, low-profile fit without restricting mobility and accommodating base layers or light midlayers.
A classic universal fit with comfortable ease. May feature slight body shaping, but predominantly straighter fit that will accommodate midlayers more comfortably.
Generous through the body for a casual loose-to-oversized fit without shaping. Designed for comfort, it accommodates heavier mid-layers.
Measure around the chest/bust just under the arms and across the shoulder blades.
Measure from the center back of the neck, across the shoulder, and down the arm to the wrist.
Measure around the widest point of the hips.
Measure around the narrowest part of the waist.
