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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.
FEATURES
UA Base™ 4.0 Extreme Base layer is our warmest yet, delivering extreme warmth in the extreme cold
UA Scent Control Technology to keep you undetected in all pursuits
Soft, brushed grid interior traps air, managing your body's microclimate to keep you warm & comfortable
Material wicks sweat & dries really fast
4-way stretch construction moves better in every direction
¼ zip front allows you to dump excess heat quickly & efficiently
81% Polyester/19% Elastarell
Select option(s) above to view technical specifications.
