Kwekoo Men's Wool Acrylic Winter Outdoor Hiking Boot Work Socks 2 Pair Pack 30% Wool, 35% Acrylic, 33% Polyester, 2% Spandex Machine wash cold with like color. Only non-chlorine bleach when needed. Tumble dry low heat. Striped with Contrast Heel and Toe. True Ribbed quality socks. Very soft hand feel. Smooth toe seaming. Made from recycled wool and acrylic yarns. Naturally moisture wicking because of wool. Not sure yet. No worries 100% Money back guarantee. You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!