Black Diamond believes a good layering system starts at the foundation, the first layer, which is why the brand developed the Black Diamond Solution 150 Merino Crew. Designed for big exertions, the baselayer top utilizes patented Nuyarn stretch merino wool, which is a combination of merino and polyester for a stronger, warmer and faster drying fabric than just merino wool alone. Naturally bacteria and odor-resistant, the Solution 150 Merino Crew is the most crucial layer for exploring in the mountains with supreme comfort.

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