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|Generous ½ zip front makes for easy layering
