Fiber content: 45% Wool, 44% Acrylic, 8% Nylon, 3% Elastic Made in USA of domestic and imported yarns.
Constructed with THOR•LON® blended with wool and thermal fibers for extra insulation, and superior softness, resilience, durability and moisture-wicking for drier, warmer, better feeling feet. Enjoying extended treks or backpacking with more comfort and foot protection, in all climates, on varied to difficult terrain above the timberline, where there is moderate to significant stress on the feet. Thorlo - Maximum Cushion Crew Warm Trekking Socks | TKX | 45% Wool.Padding specifically designed for trekking, clinically shown to reduce blisters, pain, pressures and moisture for maximum protection.