Best For: Waders & Mud Boots The ultimate heavyweight sock for late-season hunts. Designed for superior warmth and thermoregulation in non-breathable footwear, such as mud boots, waders, and insulated cold-weather boots. The StrongWool Heavyweight Sock features Herculan Wool® and Elastic Support System® technologies, with a hybrid of wool, and nylon construction for exceptional moisture-wicking performance. Calf-height with padded high impact zones, it keeps your feet warm, dry, and comfortable, enhancing the performance of your favorite cold-weather footwear.