Dr. Comfort Merry Jane Socks have Nano Bamboo Charcoal Fiber Padding in Heel and Forefoot. Y Toe Gore Eliminates Bunching at the Back of the Heel. Nano Bamboo Charcoal Fibers release Far Infrared Rays that may promote blood circulation and anion production and it’s also a natural deodorizer. Dr. Comfort socks are perfect for people living with diabetes, arthritis, edema, neuropathy and circulation issues. Includes: 2 Pairs of Socks ALSO AVAILABLE IN BLACK AND NUDE, SHOWN IN LAST PHOTO.