UA Base 4.0 is 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.
Tech Specs
| Condition | New | |
| Sport | Skiing | |
| International Availability | Argentina,Australia,Chile,Ireland,Japan,New Zealand,UK,United States,Canada | |
| Gender | Men’s |


















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