Wigwam Men's Cool-Lite Mid Hiker Pro Quarter Length Sock 61% Dri-release (85% Polyester/15% Cotton)/21% Stretch Nylon/17% X2o Acrylic/1% Spandex Made in US 57% drirelease Tencel (88% Polyester, 12% Tencel), 22% Stretch Nylon, 20% X2O Acrylic, 1% Spandex Seamless toe seam and mid-weight construction make this the perfect sock for all outdoor activities Welt top and "Y" heel pocket Machine wash warm do not bleach tumble dry low Made in USA