Realtree Girl Merlino Wool Boot Socks Gift Pack. These medium weight socks are perfect for outdoor activities with their superior moisture control and warmth. Makes a great gift for equestrians, lovers of the great outdoors, or those working outside. 65% Acrylic, 20% Merlino Wool, 13% Nylon, 2% Spandex. Machine wash warm - Tumble dry medium. Made in the USA.