Heat Holders® Primrose Twist Crew Socks for Ladies use advanced heavy bulk yarn to generate extreme insulative qualities. Just what you need during the coldest days outdoors! You'll enjoy 7 times more warmth than you would wearing basic cotton socks. Long-pile cushioning adds comfortable support underfoot and the soft, brushed interior works to trap warm air close to the skin retaining heat longer. Heat Holders Primrose Twist women's thermal crew socks feature non-binding construction providing relief for circulation problems due to diabetes and other medical conditions. 91% acrylic/5% nylon/3% polyester/1% elastane. Machine wash. Imported.