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Merino wool is the best natural fiber for thermal base layer preferred by outdoor experts across the globe, including skiers, snowboarders, snowmobilers, hikers, miners, construction workers, and the US military. These groups would all agree that the best base layer clothing to have in the cold is merino wool.Merino Wool Thermal Base Layer :
Use the filters at left to choose the best merino wool base layer for you needs. Plus, shop with peace of mind knowing that your order is guaranteed by our free returns policy, and thousands of satisfied customers.