Frostbite Winter Wool Socks Junior are knitted children’s socks in 50% wool, 30% acrylic, 15% polyamide and 5% spandex. Wool is a natural material renowned for its optimal moisture wicking, and its ability to retain heat even when wet. Terry-knit inside for maximum durability, comfort and warmth. A good fit and ventilation channels on the upper side of the foot.