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#1 in Merino Wool Base LayersBest Overall
Smartwool Classic Thermal Merino 250 Crew
Smartwool
$100.00 – $120.00
The Classic Thermal 250 is the benchmark midweight base layer, a 100 percent merino interlock knit at 250 gsm with flatlock seams and a slightly relaxed fit. It is the most recommended winter base layer in North America.
9.4
Excellent
Consensus
Don't buy this if…
- Skip the 250 weight for high-output activities, since it overheats during hard climbs above freezing.
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