Knee High Merino Wool Compression Socks - Graduated Compression 12-16mmHg (2 Pairs) Content: 60% Merino Wool, 20% Nylon, 16% Elastic, 4% Lycra-Spandex Pre-Shrunk Merino Wool - Merino Wool is the finest quality of easy care wool for exceptional warmth and softness. Wool features inherent qualities such as wrinkle resistance, colorfastness, shape recovery (resiliency), and is very breathable Compression is known to reduce swelling and fatigue by increasing circulation Designed to look like normal everyday dress socks FREE SHIPPING & MADE IN CANADA!