Made from Merino wool, these medium weight socks provide soft comfort and thermo-regulation, keeping your little one warm when they're cold and cool when they're hot. With a great kids' fit, support and wicking, your little one is sure to be comfy and dry. Memory-knit construction keeps shape, wash after wash Fully cushioned construction absorbs shocks and insulates Smooth, flat comfort toe seam 40% merino wool, 40% acrylic, 18% nylon, 2% spandex Style #5574