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The Black Diamond Project Heavy Flannel is a men's flannel shirt woven from heavyweight, brushed organic cotton twill. The boxy cut leaves room for layers underneath, so it slides over a base layer or midlayer without pulling across the shoulders. What Our Gearhead® Experts Are Saying:"The thick cotton holds off the chill on cold morning belays until the sun clears the wall. When the temperature drops further, I put a puffy over it, because a flannel adds warmth without replacing insulation." Heavy flannel shirt for cold bouldering days 100% organic cotton reduces environmental impact Double chest pockets hold small essentials Regular fit leaves room for layers underneath

Black Diamond Project Heavy Flannel In Multi
Black Diamond Project Heavy Flannel In Multi
Black Diamond Project Heavy Flannel In Multi
Black Diamond Project Heavy Flannel In Multi
Black Diamond Project Heavy Flannel In Multi
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First seen in Oct 2026
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BLACK DIAMOND
Project Heavy Flannel In Multi

$119 $84 (29% OFF)
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Black Diamond Project Heavy Flannel In Multi
Nordstrom
$119 $84 (29% OFF)
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