Features: Coolmax yarns wick away moisture quickly and keep your feet fresh Breathable mesh for greater ventilation Ankle support provides more comfort Terry loops on toe and heel reduce pressure on the foot during walking Left/Right construction for a precise fit Arch compression ...Features: Coolmax yarns wick away moisture quickly and keep your feet fresh Breathable mesh for greater ventilation Ankle support provides more comfort Terry loops on toe and heel reduce pressure on the foot during walking Left/Right construction for a precise fit Arch compression design keeps the sock in place Boneless seaming offers chafing-free comfort Y-shaped heel keeps the sock in place Polygiene treatment offers excellent prevention of odor Materials: 32.3% polyester, 32.2% cotton, 29.9% nylon, 5.6% spandex Size: M/L Recommended Use: Trekking