 This product is designed for extended hikes in moderate climates on varied or rugged terrain. This product provides the most protection available, beyond what any other sock can provide today. Extra stretch yarn added to conform more precisely to the ankle area. Smaller heel pocket for added comfort and improved fit for a woman’s smaller heel. Midweight padding in the heel and ball protect the foot from shear and impact forces and prevent painful blisters. Lace pad protects the top of foot against boot lace pressure. Ventilation panel to improve fit and wicking. Content: 86% THORLON Acrylic, 10% Stretch Nylon, 4% Spandex |