The Smartwool Wintersport Yeti is specially designed to keep your little one's toes nice and cozy. This kids' sock is perfect for winter adventures. It features a lightly cushioned shin and sole for impact absorption and warmth and hence it makes it right at home on the slopes. The over-the-calf sock has a flat knit toe seam. It is made of 74% merino wool, 25% nylon and 1% elastane.