Sockwell Men's Modern Mountain Crew Moderate Compression Socks are made from grown-in-the-USA merino and alpaca wool with added nylon and spandex for flexibility. The Accu-fit technology and graduated compression offer a secure, comfortable fit, and a breather panel keeps things airy and light. A seamless toe closure means you'll feel no bulk inside the shoe, and that's important when it comes to comfort. Machine wash in warm water and tumble dry on low heat for quick, easy maintenance that will keep your socks looking and feeling fresh.