Fish Monkey No Show Guide Series Socks Black XL. Featuring UltraSpun Polyester body and Merino Wool Heel/Toe ventilation panels arch compression and a cushioned heel and toe. Plus a seamless toe prevents chafing Perfect weight for warm weather and humid conditions. Specifications for Fish Monkey No Show Guide Series Socks: Manufacturer: Fish Monkey Gender: Male Age Group: Adults Footwear Type: Socks Fabric/Material: 60percent Merino Wool 38percent Nylon 2percent Lycra Condition: New Features of Fish Monkey No Show Guide Series Socks Merino Wool construction for superior performance Premium Cushioned heel and toe Ventilation panels for max moisture management Arch compression for reduced foot fatigue Lightweight for high-exertion activities and hot climates "Seamless" knit toe for ultimate in-shoe comfort Y-gore heel prevents slipping and chafing Wool a natural Anti-microbial Package Contents: Fish Monkey No Show Guide Series Socks Fish Monkey SM200-BLK-XL: No Show Guide Series Socks Black XL