<SPAN class=productTabs>An extra layer of lightweight warmth can save the day when the weather turns. El Cap is indispensable as a base or midlayer in cold conditions, and also makes an excellent outerwear piece. Made from 6-oz. double-faced Capilene® polyester fleece (with a touch of spandex for stretch): nonbulky, soft, moisture-wicking. </SPAN>