Designed to help keep your little one's toes nice and cozy, the Kids' Wintersport Yo Yetti is perfect for winter adventures. With a lightly cushioned shin and foot, they'll be right at home on the slopes. Sock Height: Over-the-Calf. Flat knit toe seam. . . . 71% Merino Wool, 28% Nylon, 1% Elastane. Machine wash. Made in USA.