Vapor Grid Crew

Duckworth built this piece for high-output cold-weather pursuits where managing sweat is just as critical as staying warm. Knit from the brand's proprietary Montana-grown Rambouillet merino blended with technical synthetics, the interior utilizes raised fleece channels designed to pump out excess moisture during climbs while trapping heat the moment your pace slows.

In the field, that grid structure yields superior breathability compared to traditional solid-knit merino baselayers. The synthetic component gives the fabric structural stability, holds its shape when soaked, and drops drying times considerably compared to pure wool. That high rate of air exchange cuts both ways: the garment provides virtually no wind blocking on its own, so pairing it with a windshirt or weather shell is mandatory when exposed on ridgelines.

The fit is functional and lean, sitting comfortably against the skin without excess fabric bunching beneath midlayers. Flatlock seams eliminate pressure points under backpack harnesses, and the fabric resists snagging far better than delicate lightweight wool garments. While you pay a premium for a fully domestic, ranch-to-garment supply chain, it offers a sweet spot between synthetic drying speed and natural wool odor resistance.