Simms Base Layer: long underwear tops and bottoms provide superior warmth and comfort.

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- RiverTek Bottom
  
  $69.95
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- RiverTek Top
  
  $79.95
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- WaderWick Bottom
  
  $29.95
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- WaderWick Boxer
  
  $19.95
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- WaderWick Crew Neck
  
  $29.95
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