| Duofold Mens Originals Ankle Length Bottom 400B. 6.3 ounce mid weight two-layer thremal for exceptional warmth during ver cold weather. Cotton inner layer for next-to-skin softness. Natural performance of Merino wool. Flatlock seams to help avoid irritation. NEW TAGLESS. 100% Cotton inside / 65% Cotton, 25% Merino wool, 10% Nylon outside |