Bring solid style and performance to your daily look with the Smartwool Heathered Rib sock! Sold in a one-pair pack. Classic rib sock in a wool-nylon blend. Heathered detailing offers a stylish look. Medium cushioning for impact absorption and long days on your feet. Height: crew Style Number: SW0SW164 61% merino wool, 37% nylon, 2% elastane. Machine wash, line dry. Made in the USA and imported.