Base Layers & Mid Layers

SunnySports.com offers a wide variety of base, mid layers & thermal underwear to be worn in any conditions. These undergarments are sweat-resistant, quick-dry, and durable. We carry tops and bottoms from high quality brands such as Under Armour, Terramar, and SmartWool. Wearing these performance underwear underneath your outfit ensures a comfortable and dry adventure in the outdoors. Whether you're looking for leggings, tights, thermals, or a layer to keep your torso warm and dry, we have what you are looking for.

Rab MeCo 165 Long Sleeve Zip Tee for Men

SKU: RABM6LTM

  • Merino fabric
  • Chest zipper
  • Stand up collar
  • Flatlock seams

Your Price: $100.00
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Icebreaker Tech Top Long Sleeve Midweight Crewe for Women

SKU: ICBTLMCW

  • Odor resistant
  • Breathable
  • Merino wool
  • Offset shoulders
  • Midweight

Your Price: $99.99
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Icebreaker Midweight Tech Top Long Sleeve Crewe for Men

SKU: ICBMTLCM

  • Odor resistant
  • Breathable
  • Merino wool
  • Offset shoulders
  • Midweight

Your Price: $99.99
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Icebreaker Midweight Vertex Leggings for Women

SKU: ICBMVLW

  • Odor resistant
  • Breathable
  • Gusseted
  • Merino wool
  • Midweight

Your Price: $99.99
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SmartWool Midweight Zip T for Men

SKU: SMTMZM

  • 100% Merino Wool
  • Form fit
  • 10 in. center front zip
  • Flatlock seam construction eliminates chafing
  • Shoulder panels

Regular: $85.99 $30.00 (35%)

Starting at: $55.99
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Minus33 Kobuk Expedition Weight 1/4 Zip Top for Men

SKU: MINEQM

  • Mock neck
  • Zip for venting
  • Merino wool
  • Interlock construction

List: $110.99 $16.50 (15%)

Your Price: $94.49
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Icebreaker Midweight Apex Leggings for Men

SKU: ICBMALM

  • Odor resistant
  • Breathable
  • Gusseted for comfort
  • Merino wool
  • Midweight

Your Price: $99.95
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Sale

Regular: $150.00 $55.05 (37%)

Your Price: $94.95
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SmartWool Midweight Crew Top for Men

4.5 (4 reviews)
Ratings Distribution
  • 5 Stars
     
    (3)
  • 4 Stars
     
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    (1)
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SKU: SMTMDCM

  • 100% Merino Wool
  • Form Fit
  • Crew neck with set-in sleeves
  • Shoulder panels
  • Flatlock seam construction

Regular: $85.99 $37.99 (44%)

Starting at: $48.00
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In Stock + Wish list