These robust work socks are designed to conquer anything that comes your way! Battle the elements with thermal insulation that traps your body heat and wicks away perspiration, keeping you warm and dry throughout the day. With comfort, warmth, and breathability, be prepared for whatever tasks come your way. Get Robust and take on the day with confidence. A warm, thick, and comfortable sock that traps air while being breathable enough to remove moisture, like this robust model, is the perfect balance for ideal thermal protection. These wool socks are crafted in Canada from a blend 70% wool, 28% nylon, 2% spandex. They have a heat index of 4/4. Men's Robust Wool Work Sock