The J.B. Field's "30 Below Classic" is Canada's best-selling thermal sock!
These socks are made from 70% merino wool and have heavy-weight cushioning throughout; these socks will keep your feet warm from zero to -30°C. The high content of merino wool also helps wick moisture and keep your feet dry and blister-free when doing outdoor activities in cold temperatures.
Also available in a knee-high version
Why we use merino wool in our socks: