Falke 's 'Sensitive Berlin' socks are constructed with cotton interiors and virgin wool exteriors for excellent temperature regulation. Designed in the brand's comfortable anatomic shape, this pair has a soft cuff that won't pinch and is designed with flat seams as well as reinforced stress zones. - - Black virgin wool-blend - 60% virgin wool, 23% cotton, 15% polyamide, 2% elastane - Machine wash