Drop a line and hit the streets in the all-day comfort of the Smartwool Anchor Line sock. Sold as a three-pair pack. Crew sock sits at the calf. Ultralight cushioning offers optimal performance without the bulk. Supportive arch brace. Strategically-placed durability zones. Virtually seamless toe. Style Number: SW000017 61 percent merino wool, 37 percent nylon, 2 percent elastane. Machine wash inside out on a warm, gentle cycle. Tumble dry low, lay flat, or line dry. Make in the USA and imported.