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.

Sale

SmartWool Midweight Crew Top for Men

4.5 (4 reviews)
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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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SmartWool Midweight Crew Top for Women

SKU: SMTMDCW

  • Upf 50+ protection
  • Back Body Seam Wraps
  • Shoulder Panels
  • Flatlock Seam Construction 
  • Heat Transfer Logo

List: $95.00 $25.01 (26%)

Your Price: $69.99
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SmartWool Midweight Pattern Crew Top for Women

SKU: SMTMPCW

  • 100% Merino Wool
  • Form Fitting 
  • Jacquard Knit 
  • Back Body Seam
  • Shoulder Panels

List: $105.00 $27.01 (26%)

Your Price: $77.99
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Sale

Regular: $72.99 $13.00 (18%)

Your Price: $59.99
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SmartWool Midweight Zip T for Women

SKU: SMTMZTW

  • 100% Merino Wool
  • Form fit
  • 12 in. center front zip
  • Back Body Seam
  • Flatlock seam construction eliminates chafing

List: $100.00 $25.05 (25%)

Your Price: $74.95
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Sale

SmartWool NTS Microweight 150 Pattern Crew Top for Women

SKU: SMTMWPCW

  • Soft, Non-Irritating Material
  • Shaped Bottom Hem
  • Lightweight
  • UPF Rating Of 30

Regular: $69.99 $25.00 (36%)

Your Price: $44.99
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SmartWool NTS Micro 150 Pattern Crew for Women

SKU: SMTMPW

  • Form fitting Jersey knit
  • Stretch stitching
  • Side seams wrap to front
  • Tagless comfort

List: $79.95 $19.96 (25%)

Starting at: $59.99
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Sale

SmartWool NTS Micro 150 Bottom for Men

SKU: SMTBTM

  • Lightweight base layer
  • Form fitting Jersey knit
  • Flatlock seams
  • Fully functional fly

Regular: $62.99 $20.00 (32%)

Starting at: $42.99
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SmartWool NTS Microweight 150 Crew Top for Men

SKU: SMTMCMN

  • Merino Wool
  • Stripe Tape Binding
  • Flatlock Seam Construction
  • Jersey Knit

List: $75.00 $19.05 (25%)

Your Price: $55.95
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SmartWool NTS Micro 150 Pattern Crew for Men

SKU: SMTMPM

  • Form fitting Jersey knit
  • Crew with set-in sleeves
  • Shoulder panels
  • Flatlock seam construction

List: $79.95 $19.96 (25%)

Your Price: $59.99
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List: $85.00 $22.05 (26%)

Your Price: $62.95
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Sale

SmartWool Microweight Bottom for Men

SKU: SMTMCBM

  • Made of 100% Merino Wool
  • Form Fit - Natural Rise
  • Jersey knit
  • Coats Eloflex thread
  • Flatlock seam construction

Regular: $62.99 $20.00 (32%)

Your Price: $42.99
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Sale

SmartWool Midweight Pattern Crew Top for Men

SKU: SMTMPCM

  • 100% Merino Wool
  • Form Fitted
  • Interlock Knit 
  • Shoulder Panels
  • Flatlock Seams

Regular: $90.99 $25.00 (27%)

Your Price: $65.99
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Sale

Regular: $75.99 $20.00 (26%)

Your Price: $55.99
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SmartWool NTS Micro 150 Pattern Bottom for Women

SKU: SMTBOW

  • Form fitting natural rise
  • Jersey knit with UPF 30
  • Wide elastic waistband
  • Flatlock seam construction

List: $79.95 $19.96 (25%)

Your Price: $59.99
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Sale

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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SmartWool NTS Microweight 150 Pattern Crew Top for Men

SKU: SMTMWPCM

  • Jersey Knit Construction
  • Flatlock Seam Design
  • Form Fit
  • Stripe Tape Binding

List: $80.00 $20.05 (25%)

Your Price: $59.95
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Sale

SmartWool Kids Crew

SKU: SMTKC

  • Form fitting
  • Interlock knit
  • UPF 50+
  • Crew neck

Regular: $49.99 $15.00 (30%)

Starting at: $34.99
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SmartWool NTS Micro 150 Crew for Women

SKU: SMTCRW

  • Form fitting Jersey knit
  • Stretch stitching
  • Side seams wrap to front
  • Tagless comfort

List: $74.95 $17.96 (24%)

Your Price: $56.99
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SmartWool NTS Micro 150 Bottom for Women

SKU: SMTBTW

  • Lightweight base layer
  • Form fitting Jersey knit
  • Flatlock seams
  • Elastic waistband

List: $74.95 $17.96 (24%)

Your Price: $56.99
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