"The A.T. Junior is a quality outdoor recreation sock for children. Like the A.T. and the A.T. Boot Plus, the A.T. Junior is a 3-4 season sock combining the thermal and comfort properties of wool with the moisture transport properties of a synthetic to ensure dry and comfortable feet in all conditions. Dense terry loops for cushioning Strategic padding to protect the young growing foot Recommended for hiking and extended backpacking. Content: 31% New Wool, 31% Isofil, 37% Nylon, 1% Lycra"