On a cold and blustery day, an extra layer can make all the difference in your level of comfort. And if that extra layer is made with Uniqlo's HEATTECH technology, you're bound to feel a whole lot warmer. These specialized undershirts, long underwear, and tights made for men or women are made to trap heat and keep you from shivering in low temperatures. Available at Uniqlo; prices vary.
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