Details Super thin so it can slip into a boot that's been molded to their feet, the Darn Tough RFL Jr. Over-the-Calf Ultra-Lightweight Ski and Snowboard Sock for Kids is the absolute lightest the brand makes. Merino Wool to keep things warm, dry and naturally odor resistant so the weekend gear bags shouldn't turn ripe before April. Material 57% Merino Wool 39% Nylon 4% Lycra Spandex Merino Wool has a natural ability to move heat and moisture, keeping skier's and rider's feet warm and dry. Length Over-the-Calf Kids' over the calf socks average 13 in from heel to cuff - expect them to cover the leg to just below the knee. Details Flex windows remove material in strategic areas to create a sock that's less bulky and really moves with you. DT closes every toe on their socks using their True Seamless™ technology for an ultra smooth feel that's kid-approved. Unconditionally Guaranteed for Life If these aren't the longest lasting socks you've ever owned, you can return them to the manufacturer for another pair, for life. A performance fit means no slipping, no bunching, no boundaries. Here's to feeling connected and comfortable in your boots run after run. The "still" in Still Made in Vermont, USA is personal. Darn Tough knits all their socks at their VT-based Mills, and can't imagine it any other way. Weight Ultra-Lightweight Silky ultra-lightweight socks are smooth, breathable, and feel like a second skin between your feet and boots. No Cushion These no cushion socks are ultralight and smooth - these are the best thin socks for skiing or snowboarding. Darn Tough RFL Jr. Over-the-Calf Ultra-Lightweight Ski and Snowboard Sock Kids'