UA Base 4.0 is a men's baselayer built for extreme cold weather and lower activity. It uses a unique pattern that's designed to trap heat without
Men's UA Base 4.0 Crew
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Under Armour Men's ColdGear® Base 4.0 Crew SM Black at
Under Armour Men's ColdGear® Base 4.0 ¼ Zip SM Black
Under Armour Men's ColdGear® Base 4.0 Crew SM Black at
Under Armour Base 4.0 Crew - Women's - Clothing
Men's UA Base 4.0 Crew
Under Armour Men's Packaged Base 4.0 Crew T-Shirt
Under Armour UA Base™ 4.0 Crew SM Black : Clothing