These ultralight men's compression socks are made from a blend of merino wool, stretch nylon, bamboo rayon and spandex. They feature four zones of graduated compression, which promotes circulation, minimizes swelling in your fee and reduces foot fatigue. Additionally, these socks also??provide natural odor control and wick sweat and moisture. Material: 32% Merino Wool, 32% Stretch Nylon, 31% Bamboo Rayon, 5% Spandex. Graduated??15-20 mmHg compression. Natural stretch. Turn welt top. Arch support. Seamless toe closure. Odor resistant. Thermoregulation. Moisture wicking. Length: Knee length. Machine wash. Made in the USA. 845028046452 34037900044 SW19M