This Smartwool Heathered Rib 3-Pair Pack of socks will swiftly become your bread and butter for everyday comfort. Crew socks that sit at the calf. Sold as three-pair pack. Smartwool Signature Sock. Medium cushioning that balances warmth and protection in colder weather. Athletic ribbed cuffs help keep your socks in place when youre on the go. Virtually Seamless toe is designed for all day comfort and to minimize chaffing. Style Number: SW0164P3 61 percent Merino wool, 37 percent nylon and 2 percent elastane. Machine wash, tumble dry. Made in the USA.