Vital Salveo- Bamboo Charcoal Outdoor Merino Wool Hiking Socks, Dark Gray (Crew) Made by Bamboo Charcoal yarn with high-density weaving technique for extreme softness, comfort, and mobility Have sophisticated effects of wicking, deodorizing, and antimicrobial characteristic, no smell for long hours wearing The premium quality merino wool is extremely soft supreme warming effect High endurance and anti-friction characteristics keep non-slip and eliminate the risk of sports injury, with functional weaving yarn, it helps prevention of inner sole or skin diseases such as athletes foot or fungal infection Release far infrared and negative ions, effectively eliminate fatigue, soreness of the foot.