- UA Base™ 4.0 Extreme Baselayer is our warmest yet, locking in your body's heat to deliver extreme warmth in the extreme cold
- UA Scent Control Technology to keep you undetected in all pursuits
- Soft, brushed grid interior traps air against your skin, closely 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
