Tactical Heavyweight Merino Wool-OTC Cushion Sock (Black), Darn ToughThis Tactical Sock slips seamlessly into any footwear for a long day or even longer night. Meant for the Extreme Cold Weather Mountaineering or the Highest of Heat to provide added comfort and protection on rugged terrain. Featuring full terry loop cushioning throughout for maximum comfort. Elastic support at arch. Reinforced heel and toe for increased durability. SPECS: No slipping, no bunching, and no blisters Unprecedented durability and our unique