The Merino Activity Socks are one of American Trench's best products. They use American sourced merino wool in this sock - which is soft, warm, and moisture wicking. The interior of the sock is terry knit, with big loops of soft merino that create a nice padded layer of comfort and warmth. This is a rugged style boot sock, but it's not too thick - it will fill out your shoes or boots without crunching your feet

• Knit from USA grown and spun merino wool 
• Content: 64% merino wool, 21% Nylon, 14% Acrylic Spandex, 1% Spandex
• Fit: one size (US men's 8.5 - 13); stretches to mid-calf, holds to leg
• Care: machine wash, tumble dry