Specification: Material 70% Acrylic, 28% Polyester, 2% Rubber - Package List- Multi Packs Thermal Socks with Gift Box Size: -Fit shoes size 5-13 Perfect socks Although our warm socks keep your feet feeling warm on cold days, they don't have a heavy, bulky fit. And they don't cause itching, they have a soft texture you'll love. Wool socks have good air permeability, which can absorb sweat and dry quickly. Keep the shoes fresh without strange smell. Best Choice For people who are afraid of cold in winter, they need a pair of warmest socks to warm up their whole body! Perfect for camping, hiking, skating, skiing and other outdoors. 24 - Hour Customer Service If you have any questions with our products, please contact us, your suggestion is very valuable to us. We will try our best to make every customer satisfied. Order this heated socks pack today and enjoy a more comfortable winter.