The J.B. Field's 40 Below Arctic Trail is one of the warmest thermal winter 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 aliner sockto help wick away moisture and keep your feet smelling fresher, feeling warmer, and blister-free.
Pre-shrunk Wool: We use only the finest quality of easy-care wool in our socks because it is such a versatile fibre. It is breathable and moisture-wicking, and helps regulate body temperature by keeping feet dry, preventing blisters, and controlling odour.
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 8–12 Shoe / Women's 9–13 Shoe)
X-Large (Men's 14–16 Shoe)
Content:85% Pre-Shrunk Wool, 15% Nylon
Full Cushion: Full Terry Cushion adds comfort, extra warmth, and protection
Heavy Weight: 162- 200grams(M-XL)
Made proudly in Toronto, Canada!
Fabric & Care
Machine Wash Warm, Wash Inside Out. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean.