78% Wool, 15% Polyester, 7% Spandex.Imported.Wool.Machine Wash.High Percent of Wool - Different from other classic wool socks, LIXIA wool socks is made of 78% wool,15% polyester, 7% spandex,which using a mixed textile technology to create a smooth surface and soft tight feeling.Size and Washing - No need to worry about size.This socks is so elastic to fit most US women shoe size 6-10.Also no need to worry about the shrink after wash.Machine wash accepted, hand wash recommended.And no need of other special care like ironing or dry-cleaning.Womens Friend - Whether you working indoors or hiking outdoors,this socks will protect you from the cold weather.Due to breathable, soft, warm and thin,it can fit all shoes:rain boots,duck boots,clogs,loafers or sneakers.