Designed to help keep your little one's toes nice and cozy, the Kids' Wintersport Yeti is perfect for winter adventures. With a lightly cushioned shin and foot, these are right at home on the slopes.. . 64% Merino Wool/34% Nylon/2% Elastane. Sock Height: Over-the-Calf. Flat knit toe seam. Light cushioned shin and sole for impact absorption and warmth. Made in USA of Imported Yarns.