NANDN Woolen Knee-High Ski Socks25% Wool, 41. 6% Acrylic, 25% Polyester, 4% Cotton, 4. 4% Spandex Compression Calf: Gradual compression for comfort and muscle support. Thermal Design: Thickened calf and warmth for cold weather. Ankle Stability: Nylon wrapped ankle for secure fit during activities. Breathable: Mesh sections for moisture management and dryness. Arch Support: Conforms to the foot's arch for added comfort. Shock Absorption: Enhanced cushioning and pressure dispersion.