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J.B. Field's Icelandic "30 Below Classic" 70% Merino Wool Thermal Sock


Sale price$17.00
Shipping calculated at checkout.
  • 1 Year No Risk Guarantee
  • Made in Canada
  • $85 Free Shipping
  • Made with ethically sourced yarns

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 as a slightly imperfect or in a knee-high version

Why we use merino wool in our socks:

Merino wool is a type of wool that comes from a merino sheep. It is the finest wool on the market, making the fabric soft and itch-free. It is also breathable and temperature-regulating, so your feet are not too hot or cold. Merino is one of the best fibres for wicking moisture as it can absorb up to 30% of its weight in moisture and moves it from your skin to the outside of the fabric, where it evaporates. Because it stays dry, odour-causing bacteria cannot grow, making it a naturally antimicrobial fibre.
Sizes available:
X-Small (Kids 8-11 Shoe)
Small - (Boys/Girls Adult 1-4  & Adult 2-5 )
S/M (Women's 4-7 Shoe / Men's 3-6)
Medium (Women's 7-10 Shoe / Men's 6-9 Shoe)
Large (Men's 8-13 Shoe / Women's 9 -13 Shoe)
X-Large (Men's 14-16 Shoe)
  • Merino Wool Socks: 70% Merino Wool, 30% Nylon
  • Merino Wool for exceptional softness, moisture wicking and temperature regulation
  • Merino wool has a natural crimp in the fibre. This crimp traps body heat in air pockets around your body, keeping you warmer for longer. 
  • Thermal Socks for harsh winters
  • Non-Binding: the loose-fitting top won't restrict circulation in the leg 
  • Heavy Weight Cushion -  full terry cushion for added comfort, extra warmth, and protection
  • Suitable for extreme cold weather as low as -30°C
  • Heavyweight: 75-142 grams(XS-XL)
  • Made proudly in Toronto, Canada!

For children's sizes, click here.

sock length chart

Machine Wash Warm, Wash Inside Out. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean.

If any of ourJ.B.Field's socks do not meet your expectations, under our No-Risk Guarantee, we will replace them with ones that do – at no cost for you within 1 year of purchase.

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A Made in Canada Story

Founded in 1877 in Tavistock Ontario, J.B. Field's was origionally set up to manufacture socks for the logging industry. Today it still remains a family owned business focused on making the world's best socks.