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UA Base 4. delivers heat like no other, keeping you warm even in the brutal cold
Soft, brushed negative grid interior traps hot air, providing superior warmth
4-way stretch construction moves better in every direction
Material wicks sweat & dries really fast
Under Armour’s mission is to make all athletes better through passion, design and the relentless pursuit of innovation
UA Base 4.0 delivers heat like no other, keeping you warm even in the brutal cold.Under Armour’s mission is to make all athletes better through passion, design and the relentless pursuit of innovation.Where we started? It all started with an idea to build a superior T-shirt.The technology behind Under Armour's diverse product assortment for men, women and youth is complex, but the program for reaping the benefits is simple: wear HeatGear when it's hot, ColdGear when it's cold, and AllSeasonGear between the extremes...