Stay warm in extreme winter conditions with our 30 Below sock line. Engineered for cold climates, these thermal socks provide superior insulation, moisture-wicking comfort, and durable construction for long days outdoors. Perfect for winter work, hiking, snow activities, and everyday cold-weather wear.

• 70% Merino Wool, 30% Nylon   • Heavy-weight cushioning for comfort & warmth  

Available in three styles:

The J.B. Field's *30 Below Classic* is Canada's best-selling thermal
sock, designed to keep your feet warm in temperatures as low as -30°C.

Made from 70% merino wool, these socks offer exceptional softness, moisture-wicking properties, and temperature regulation. The merino wool absorbs moisture, keeps feet dry, and prevents odor, while its natural crimp traps heat for added warmth.

Our classic 30 Below style with some key upgrades including a double cuff for better
sock retention and added arch and ankle support to prevent slippage and
bunching.

Ideal for winter sports, these thermal socks are made with 70% Merino wool  for superior softness, temperature regulation, moisture wicking, and natural odor resistance. The over-the-calf length provides extra coverage, making them perfect for skiing and harsh winters.