Euro Sock Ski Superlite Socks - Kids' (Size XXXS): This extra-soft, flat knit, ultralite-weight, OTC-length sock is designed to satisfy skier who want to feel a perfect fit in the ski boots. The affordable price does not compromise any of the skier's expectations. Elasticized Arch and Ankle support Ultra "Smooth" knit Perfect adaptable contour No bunching Flat Toe Seam MicroSupreme Composition: 80% Microsupreme, 15% Nylon, 5% Spandex