These heavyweight FoxSox, with fully thermalined wool construction, naturally thermoregulate to keep you warm when you're cold and cool when you're hot. Extra softness and cushion will keep you comfortable and dry no matter the conditions or setting. Our exclusive Wick Dry™ technology manages moisture to keep feet dry. Fully thermalined construction absorbs shocks and insulates Reinforced toe and heel add durability and longer sock life Exceptionally soft and cushiony for added comfort and warmth Made to resist the friction that causes blisters and hot spots Smooth, flat comfort toe seam 51% Acrylic, 31% Nylon, 17% Wool, 1% Spandex Style #2362