1970's Logger Thermal SocksA heavyweight boot sock with thermal insulation to keep feet warm in frigid temperatures. Details 50% Merino Wool, 30% Wool, 10% Stretch Nylon, 9% Acrylic, 1% Spandex High wool content for warmth Contoured rib top keeps sock up Smooth, flat toe seam minimizes rubbing High cushioning for shock absorption and warmth Wool will continue to insulate even if wet Elastic ribbing in the cuff and leg provide a relaxed stretch fit Made in the USA with imported