When the cold gets serious, reach for the Extreme OTC. This heavyweight Merino wool sock is built to deliver full-leg warmth and uncompromising comfort, making it the go-to for the coldest days and toughest conditions.
The tall over-the-calf design offers complete coverage and a stay-put fit, while the thick, cozy knit locks in heat no matter how far the temperature drops. Merino’s natural moisture-wicking, temperature-regulating, and odor-resistant properties keep your feet dry, comfortable, and fresh even after long days in boots. With full cushioning from top to toe, a smooth irritation-free seam, and ribbed construction to prevent slouch, it’s a powerhouse of warmth and durability. Made in the USA and reinforced with nylon and Lycra.
Style X599
