This Smartwool Walk Light Crew 3-Pack of socks will keep you out enjoying your favorite routes day after day. Crew socks that sit at the calf. Sold as three-pair pack. Smartwool fit system features ankle and arch braces the help ensure you get a secure fit. Utilizes lightweight cushioning at the shin and sole of the foot to provide warmth and a little impact absorption. Waffle knit flex zones in key areas provide a more comfortable range of motion. Reinforced sole provides added durability for high intensity activity. Flat toe seam helps reduce chafing and provide all day comfort. Style Number: SW0250P3 60 percent Merino wool, 38 percent nylon, 2 percent elastane. Machine wash, tumble dry. Made in the USA.