6 out of 6 people found this product review helpful.
spend the extra money to get thermals without cotton...
It doesn't feel very nice to start sweating when I have on my winter layers and the baselayer is cotton. The advantages of merino wool (sweat-wicking, antibacterial, temperature regulation, etc) are lost when the innermost layer is cotton. You'll be a lot happier if you spend a little bit of extra money on something else.