Designed to help keep your little one's toes nice and cozy, the Kids' Wintersport Yeti Betty is perfect for winter adventures. With cushioning in the calf, shin, and foot, they'll be right at home on the slopes. Sock Height: Over the Calf. Light cushion on shin, calf, and foot. . . . Flat knit toe seam for additional comfort. 65% Merino Wool, 34% Nylon, 1% Elastane. Machine wash. Made in USA.