Darn Tough Merino Wool Work Socks are a great go-to sock for all day comfort. This sock is medium weight full cushion. Cushion everywhere. Cushion cushion cushion. Nice and warm. This sock goes straight up your calf and stops just below the knee. All Darn Tough socks are made in the USA and backed by Darn Tough#39;s Lifetime Guarantee. Specs: 68% Merino Wool 28% Nylon 4% Lycra Spandex