SmartwoolApparel

Classic Thermal Crew Base Layer

Name: Smartwool Classic Thermal Crew Base Layer
Brand: Smartwool
SKU: smartwool-classic-thermal-crew

$120

Merino wool insulation layer that keeps you warm even when wet. Critical for mountain races where temperatures swing 30+ degrees between day and night.

Why We Recommend It

Mountain ultras with big temperature swings demand a layer that performs wet or dry. Merino insulation keeps heat even after creek crossings and rain — synthetics can't match it.

Specifications

FabricMerino wool blend

FitRegular

Weight~250g (M)

Role

base-layer

Best Conditions

coldextreme

Where to Buy

Buy on Amazon

base-layermerinothermalmountaincold-weather

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