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 direc...

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Product Review

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. Performance elastic waistband . Working fly. Inseam: Size LG 30" (+/- ½” per size).

  • 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

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