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Under Armour Base 4.0 Crew
UA Base 4.0 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
UA Baseâ„¢ 4.0 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. Anti-odor technology prevents the growth of odor-causing microbes.