85% Wool Socks for Winter, J.B.Field's 40 Below

The warmest thermal socks on the market! Contains 85% preshrunk wool. Available in solid colours, but also available with patterns under J.B. Field's True North. Order today at Great Sox!
The J.B. Field's 40 Below Arctic Trail is one of the warmest thermal socks we make, containing 85% preshrunk wool! This style was designed for people who require a sock to keep their feet dry and warm in the most extreme conditions—as low as 40ºC!  Pair these winter socks with a liner sock to help wick away moisture and keep your feet feeling fresher, warmer, and blister-free.   Don't require the extra length and looking for a slipper version of these socks?  PLEASE NOTE: These socks run large. We recommend wearing a liner or sizing down, if possible.  Sizes available:Medium (Men's 4–8 Shoe / Women's 5–9 Shoe)Large (Men's 8–13 Shoe / Women's 9–13 Shoe) X-Large (Men's 14–16 Shoe) Wool Socks: 85% Preshrunk Wool, 15% Nylon Thermal Socks for harsh winters  Full Cushion: Full Terry Cushion adds comfort, extra warmth, and protection Heavy Weight: 162- 200grams(M-XL) Made proudly in Toronto, Canada! Available with a pattern design with J.B. Field's True North

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40 Below Arctic Trail - Surplus Militaire Pont-Rouge

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40 Below Wool Thermal Socks, J.B. Field's True North

Also available in a MEDIUM with a snowflake pattern, These Men's Wool Socks are similar to our plain -40 Below Arctic Trail socks but with a pattern!

J.B. Field's Men's Icelandic 40 Below True North Wool Thermal Winter Sock

J.B. Field's 85% Wool Arctic Trail -40 Below Winter, Thermal Sock

40 Below Wool Thermal Socks, J.B. Field's True North