Dr. Comfort Ankle socks are designed to keep your feet healthy. Their smooth-seam construction reduces the risk of unwanted friction that can lead to calluses. Nano bamboo charcoal fibers help keep your feet dry, which prevents infection. And because they're non-binding, they don't inhibit your circulation. Dr. Comfort Quarter (Ankle) diabetic socks are available in white and black. Features Non-Binding Top Nano Bamboo Charcoal Fiber Padding in Heel and Forefoot Y Toe Gore Eliminates Bunching