These socks are 30% lighter than other compression socks for total comfort in any weather. Made with luxuriously soft, USA-grown merino wool that regulates temperature and keeps feet dry. Premium merino wool and bamboo blend offers moderate graduated compression with superior softness. Antimicrobial. Features added arch support and seamless toe. Merino wool/bamboo rayon/nylon/spandex. Machine wash. USA. 1 pair.