If you've ever suffered from the cold, you'll wonder how you did without this special aluminized, stretch fabric developed for NASA to protect astronauts from the incredible cold of deep space. The fabric reflects body heat and thousands of tiny pockets trap it. The results are lightweight, easy-to-move-in glove liners that keep your hands protected and warm in sub-zero weather. Machine washable. A Great Alternative to Electrically Heated Socks We also sell Thermal Socks made from this same material for men and women. Look in the Men's Socks Section for the Men's Thermal Socks and the Hoisery & Intimates Section for the Women's Thermal Socks. Stay warm and protected all over with these thermal liners.