Features: - Wicking & odor-resistant - Right Angle® arch support - Extended high-loft toe for added warmth - Women-specific fit & over-the-calf design - Made in the USA FABRIC TECH: 75% Merino wool, 20% nylon, 3% polyester, 2% Lycra® APPROX. WEIGHT: 4 oz. / pair SIZE: S: 4-7, M: 7-10, L: 10