Under Armour
Men's Packaged Base 4.0 Crew
in store

Product Information
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 adding bulk. Think long underwear, revamped for today's top athletes.
In Stock
Murdoch's Ranch & Home Supply
4450 Ledge Rock Dr
Johnstown, CO 80534
Pickup Available Now

Product Information
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 adding bulk. Think long underwear, revamped for today's top athletes.
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