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  Castelli Core Mesh Short Sleeve Base Layer

  Sweated in by the Test Team.
  $49.99

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  Castelli Core Mesh Sleeveless Base Layer

  The coolest sleeveless base layer.
  $29.99 - $44.99

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  Castelli Feroce Midweight Long Sleeve Base Layer

  Short sleeve base layer + integrated arm warmers
  $99.99

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  Castelli Iride Seamless Long Sleeve Base Layer

  You ride?
  $89.99

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  Castelli Iride Seamless Short Sleeve Base Layer

  The softest seamless.
  $79.99

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  Castelli Uno Plasma Long Sleeve Base Layer

  It's never too early to be ready for 'cross season.
  $49.99

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  Castelli Uno Plasma T Base Layer

  One handed swings, two handed swings, kettle bell squats... mad hip snap!
  $44.99

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  Castelli Wind Long Sleeve Base Layer

  Windless & weightless
  $89.99

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  Castelli Wind Short Sleeve Base Layer

  Don't get out the winter clothes yet!
  $79.99

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  Castelli Women's Calorosa Cap Sleeve Base Layer

  V-neck
  $54.99

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  Castelli Women's Freddolosa Long Sleeve Base Layer

  Seamless winter base layer for the ladies!
  $69.99

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  Castelli Wool Long Sleeve Base Layer

  Baaa-bbers, so cute, fuzzy, and wicking.
  $89.99

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  Castelli Wool Long Sleeve Zip Neck Base Layer

  Zippered turtleneck, for the road or the opera.
  $99.99