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Intraknit Thermal Merino Baselayer Bottom - Men's

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Don't worry though, we have a lot more Men's Midweight Long Underwear Bottoms in stock than that.

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Why We Like The Smartwool Intraknit Thermal Merino Baselayer Bottom

There's so much to explore in the winter, so we suit up in waterproof shells, but not before slipping into the Smartwool Intraknit Thermal Merino Baselayer Bottom. These midweight baselayer tights keep us ultra-warm for snowshoe hikes and resort adventures. Merino wool offers its thermal magic, keeping us simultaneously warm and sweat-free. And Smartwool's innovative Intraknit technology enhances breathability and dry times for maximum comfort while we're on the move.


  • Innovative baselayer pants maximize warmth during winter activity
  • Soft merino wool manages temperature regulation and resists odors
  • Polyester threads boost durability and speed-up dry time
  • Midweight knit offers impressive warmth in freezing temps
  • Intraknit mesh ventilation for cool, drying airflow
  • 3D mapping enhances range of motion for heightened performance
  • Slim fit for easy layering under hiking pants and ski bibs
  • Item #SWLZ8SC
52% merino wool, 44% polyester, 22% elastane, 2% nylon
Insulation Weight
natural attribute of merino wool
ski, snowboard
Manufacturer Warranty
2 years