The Polar Fil™ insulation in these Carhartt socks will keep your feet comfortably warm.

• 42% acrylic, 34% Polar Fil™ polyester, 19% wool, 4% nylon, 1% lycra spandex
• Polar Fil™ is a triple-blend of fibers that provides superior insulation
• Ventilating cooling channels
• Cushioned leg pads
• Anti-odor properties fight odor-causing bacteria