The J.B. Field's "30 Below XLR" thermal sock is ideal for those who spend a lot of time outside in cold weather and is perfect for winter sports. With a full, heavyweight cushion and soft Merino wool, they will keep your feet warm and comfortable in the most extreme conditions.
The only differences between these thermal socks and the "30 Below Classic" are the double cuff to help socks stay up better and both ankle and arch support, which prevents slippage and bunching.
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 (8-11 Kids Shoe)
Small (Men's 1-4/Women's 2-5)
Medium (Men's 4–8 Shoe / Women's 5–9 Shoe) Large (Men's 8–12 Shoe / Women's 9–13 Shoe)