Shred all day long in Smartwool's Women's Ski Targeted Cushion Extra Stretch Over the Calf Socks. Made using some of Smartwool's best technologies such as indestructawool™ for better durability, Virtually Seamless™ toe for comfort and a 4 Degree™ elite fit system for a perfect fit. Built with a more narrow heel, slimmer fit and extra stretch around the calves for a women specific fit. Thoughtfully places mesh zones for breathability and targeted cushioning to keep your feet feeling fresh all day. For ladies looking for a bit of extra calf room in their socks these have a circumference of up to 21" (53cm) compared to Smartwool's standard circumference of up to 16.5" (42cm).