All-Season Merino Crew

A good baselayer disappears — you stop noticing it's there and just notice that you're not cold or clammy. Smartwool's All-Season Merino Crew uses a lightweight merino jersey with a recycled nylon core, so you get merino's natural temperature regulation and odor resistance with extra durability against repeated wear and washing.

A slim fit and raglan sleeves keep the layer close to the body without restricting movement, and flatlock seams sit flush against the skin instead of chafing under a pack strap or harness. Offset shoulder and side seams stay smooth under layers, making this as much a everyday base for cool mornings as it is a foundation piece under a shell on a cold lift line.