84% Merino Wool, 15% Nylon, 1% Elastane Knit in USA of Imported Yarn WARM INSULATION: Experience durability at its peak with the Smartwool Men??s Larimer Crew Socks. These socks are built for performance in the highest degree, making them ready for any adventure on your list while keeping your feet toasty warm. COMFORTABLE FIT: The Virtually Seamless toe on the Men??s Larimer Crew Socks provides all day comfort while the subtle Donegal yarn details add texture and traditional style. DURABLE YET BREATHABLE: The Men??s Larimer Crew Socks give a nod to classic rag wool but offer the comfort and benefits of modern Merino for enhanced comfort that will last you all season long. MEDIUM CUSHION: The medium cushioned bottom on the Men??s Larimer Crew Socks allows you to wear these performance socks on various trails and road terrains without discomfort. Whether you are biking, running, skiing, or hiking, these socks will provide you with padded comfort during any season. CARE INSTRUCTIONS: Comprised of 84% Merino Wool, 14% Nylon, 1% Elastane, and 1% Polyester, the Men??s Larimer Crew Socks should be machine washed inside out in warm water and tumble dried on low. These socks should not be bleached, ironed, or dry cleaned.