The Iron-Tuff Collection has been proven in the cold for over 65 years.
, 41% Merino wool / 35% Acrylic / 23% Nylon / 1% Lycra, Welted top keeps socks fitting snug, Nylon reinforcements in heel, toe and under foot.Iron-Tuff Sock Gray L/XL From the Alaska Pipeline to every step of getting food to America’s tables, Iron-Tuff has been there. Extreme durability, legendary warmth – it’s the original way to Master the Cold.