This extra-soft, flat knit, ultralite-weight, OTC-length sock is designed to satisfy skiers who want to feel a perfect fit in the ski boots. Elasticized Arch and Ankle support Ultra "Smooth" knit Perfect adaptable contour No bunching Flat Toe Seam Size Chart: XXXXSmall - Kids US Size 7 - 10 XXXSmall - Kids US Size 10 -13 XXSmall - Kids US Size 13 - 1 XSmall - Kids US Size 2 - 4 Product Features: Fabric:80% Microsupreme, 15% Nylon, 5% Spandex Eurosock Youth Jr Superlite OTC Ski Sock