Smartwool Women's PhD Pro Approach Light Elite Crew Sock For those who are vertically inclined, the Women's PhD(R) Pro Approach Crew combines carefully designed comforts with rugged purpose. Made with the help of Conrad Anker, these socks feature extra cushioning to protect against footwear friction, a 4 Degree(TM) elite fit with flex zone, and body mapped mesh to help make even the most ambitious approaches more manageable. Features: Sock Height: Crew Flex zone at ankle joint Virtually Seamless(TM) toe Achilles strap provides extra protection and warmth Made in USA of Imported Yarns: 55% Merino Wool, 42% Nylon, 3% Elastane