Under Armour ColdGear Base 3.0 Leggings Fleece-lined leggings can be great for keeping you warm while you're out on the ice rink or during a brisk winter run, but the extra layer of fabric can often feel bulky and inhibiting. The Under Armour ColdGear Base 3.0 Leggings ($70) use lightweight material and are equipped with brushed grid technology that's designed to trap your natural body heat while wicking away sweat. Image Source: underarmour.com Under Armour ColdGear Base 3.0 Leggings $70 from underarmour.com Buy Now