Woolrich Men's Ten Mile Hiker Crew Sock 2-Pack, Olive, Sock Size:10-13/Shoe Size: 6-12 78% Merino Wool/20% Nylon/2% Lycra Made in US Machine Wash Midweight cushion throughout Lin-toe seam prevents blistering Arch support and ankle support High density merino lamb's wool soft, itch-free performance fiber that wicks moisture Impact areas reinforced with nylon for durability