Under Armour Men's Packaged Base 4.0 1/4 Zip Baselayer

UA Base 4.0 Extreme Baselayer is our warmest yet, locking in your body's heat to deliver extreme warmth in the extreme cold. Built for extreme cold weather and lower activity, it uses a unique pattern designed to trap heat without adding bulk. UA Scent Control Technology helps keep you undetected in all pursuits. A soft, brushed grid interior traps air against your skin, closely managing your body's microclimate for warmth and comfort. The material wicks sweat and dries really fast, and 4-way stretch construction moves better in every direction. A 1/4 zip front allows you to dump excess heat quickly and efficiently, offering easy temperature control. Think long underwear, revamped for today's top athletes.

• UA Base 4.0 Extreme Baselayer 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