Kids' over the calf socks average 13 in. from heel to cuff - expect them to cover the leg to just below the knee. A performance fit means no slipping, no bunching, no boundaries. Here's to feeling connected and comfortable in your boots run after run. Flex windows remove material in strategic areas to create a sock that's less bulky and really moves with you. We close every toe on our socks using our True Seamless™ technology for an ultra smooth feel that's kid-approved. Merino Wool has a natural ability to move heat and moisture, keeping skier's and rider's feet warm and dry. All-season performers, midweight socks naturally adapt to keep your feet at the right temperature. The “still” in Still Made in Vermont, USA is personal. We knit all our socks at our VT-based Mills - we can't imagine it any other way. Unconditionally Guaranteed for Life - if these aren’t the longest lasting socks you’ve ever owned, return them for another pair. Darn Tough Polar Bear Over-the-Calf Midweight Ski & Snowboard Sock Kids