UA Base™ 4.0 delivers heat like no other, keeping you warm even in the brutal cold.
- Soft, brushed negative grid interior traps hot air, providing superior warmth
- 4-way stretch fabrication allows greater mobility in any direction
- Moisture Transport System wicks sweat away from the body
- Anti-Odor technology prevents the growth of odor causing microbes
- Performance elastic waistband
- Working fly
- Polyester / Elastane