2nds . Designed for the coldest, most-rugged climates, Thorlo's mountaineering socks boast a heavyweight design and thick cushion infused with cozy worsted wool and the wicking, temperature-regulating power or THOR-LON® technology.

• Specially designed with padding to cushion critical strike zones, prevent blisters, reduce destructive shear forces and remain durable over time
• THOR-LON® fibers deliver outstanding softness, durability and moisture control for drier, more comfortable feet
• Medium-density shin pad provides cushion and warmth
• Spandex arch for support
• Medium-density instep protects and cushions instep from boot folds and lacing
• High-density heel protects against impacts and abrasions, and prevents blisters
• Worsted wool toe for maximum toe warmth
• Heavyweight
• Height: Over the calf
• Made in United States of America
• Heavyweight
• Height: Over the calf
• Fabric: 60% worsted wool, 26% THOR-LON® acrylic, 11% stretch nylon, 3% spandex
• Care: Machine wash, tumble dry
• Made in United States of America