Sizes: XXXS10 13, XXS13 1, XS2 4. The Eurosock Ski Supreme Jr. Ski Socks for kids sacrifice none of the technical and performance features of the adult Eurosock Ski Socks. From the Andes to the Rockies, these socks are ready for whatever nature throws at them. The unique padding system at the shin, heel, and forefoot insures comfort and eliminates friction. Ventilation channels, strategically placed between the padding, allow breathability and the transport away from the skin. The elasticized arch band and ankle brace, smooth toe and flat knit construction insures both a wrinkle free fit and maximum support without the bulk. The insulation and technical wicking fibers of MicroSupreme, combined with nylon and spandex, provides an ideal moisture management system. Over the calf sock designed to enhance your skiing. 75% Thermolite polyester, 15% nylon, 5% spandex, 5% acrylic.