Never take warmth for granted, especially when it comes to your feet. Heat Holders ULTRA LITE Charlie Twist Long Socks for Men optimize thermal protection with a lightweight profile ideal for wear with tight-fitting shoes and boots. Advanced heavy bulk yarn generates extreme insulative qualities. You'll enjoy 3 times more warmth than you would wearing basic cotton socks. Soft, brushed interior works to trap warm air close to the skin, retaining heat longer. Heat Holders ULTRA LITE Charlie Twist men's thermal long socks feature non-binding construction providing relief for circulation problems due to diabetes and other medical conditions. Fits men's shoe sizes 7-12. 89% acrylic/10% nylon/1% elastane. Machine wash. Imported. 89% acrylic/10% nylon/1% elastane Ideal for wear with casual shoes and boots Advanced heavy bulk yarn 3 times more warmth than cotton socks Soft, brushed interior Non-binding construction