Vital Salveo-Hiking/Trek Sport Ankle Socks 46%Cotton9%Nylon(Ge)27%Polyester(BC)12%Polyester(Normal)6%Lycra Spandex Enhance Performance -- Created with superior softness fiber, moisture wicking, and resilience, perfect feeling for your feet. Unique padding suitable for trail hiking, reduce pain, fatigue, and pressures. Innovative Fiber -- Using bamboo charcoal and germanium material to make the physical activity get more energy and antibacterial yarn to prevent the growth bacteria, keep your feet comfortable. Y-stitch heel keeps the socks not easy to be loose, and more smoothly. Ideal for Sports and Daily Wear -- Reduce muscle fatigue during travel, hiking, trek, sports and long periods on your feet. Improve Circulation -- Bamboo charcoal and germanium yarn promote blood circulation, released far infrared and negative ions to improve blood flow. Extremely Breathable -- Mesh ventilation on the instep let your feet breathe and dissipate heat.