Smartwools medium-weight Premium CHUP Chinle Crew socks were made for cold temps and cozy cabins. Luxurious feel, premium construction, and a supportive arch brace make these socks fun and stylish. Get ready to wrap cold toes in Merino wool warmth. Crew cut sits at the calf. Medium cushioning that balances warmth and protection in colder weather. Premium yarn construction. Style #SW010145052. 71 percent wool, 28 percent nylon, 1 percent elastane. Machine wash warm, tumble dry. Made in the USA.