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Under ArmourBase Layer 4.0 Bottom - Boys'

Under ArmourBase Layer 4.0 Bottom - Boys'

Select a color:Black 2

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Size Chart


5 out of 5 stars
2 Reviews

Base Layer 4.0 Bottom


  • Cozy baselayer bottoms built for the coldest ski days
  • Heavyweight fabric keeps them comfortable and warm on the slopes
  • ColdGear technology keeps them from being too hot or too cold
  • Moisture transport system prevents sweat from freezing over
  • Four-way stretch fabric lets them move in all directions
  • Form-fitting design traps body heat and makes it easy to layer over
  • Item #UND02S7

Tech Specs

81% polyester, 19% elasterell
Insulation Weight
Recommended Use
skiing, snowboarding, hiking, nordic skiing, casual
Manufacturer Warranty
limited lifetime

Overall Rating

5 based on 2 ratings

Review Summary

5 Stars - 2 reviews
4 Stars - 0 reviews
3 Stars - 0 reviews
2 Stars - 0 reviews
1 Stars - 0 reviews

Fits Slightly Small

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Runs smallTrue to sizeRuns large

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