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.

SmartWool PhD Wind Tight for Men

SKU: SMTWTM

  • PhD performance
  • 360 degree reflectivity
  • Drawcord at waist
  • Windproof front panel

Your Price: $139.99
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SmartWool PhD Tech Tight for Men

SKU: SMTTGM

  • PhD performance
  • 360 degree reflectivity
  • Drawcord at waist
  • Form fit and mid rise

Your Price: $125.00
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Arc'teryx RHO AR Bottom for Men

SKU: ARCRABM

  • Moisture-wicking
  • Breathable
  • Great warmth-to-weight ratio
  • Quick drying

Your Price: $119.00
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Ibex Woolies 3 Bottoms for Men

SKU: IBX3BM

  • Breathable
  • Anti-odor
  • Gusseted crotch
  • Flatlock seams

Your Price: $110.00
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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 NTS Midweight 250 Pattern Bottom for Women

SKU: SMTBPW

  • Midweight baselayer
  • Flatlock seams
  • Form fit, natural rise
  • Interlock knit

Your Price: $99.99
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SmartWool NTS Midweight 250 Pattern Bottom for Men

SKU: SMTPNM

  • Heaviest baselayer fabric
  • Covered elastic waistband
  • Traditional fly design
  • Flatlock seams

Your Price: $99.99
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Icebreaker Midweight Apex Leggings for Men

SKU: ICBMALM

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

List: $109.99 $10.04 (9%)

Starting at: $99.95
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Ibex Woolies 2 Bottoms for Women

SKU: IBX2BW

  • Breathable, anti-odor
  • Moisture managing
  • Wide waistband
  • Flatlock seams

Your Price: $95.00
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SmartWool NTS Midweight 250 Bottom for Women

SKU: SMTM2W

  • Flatlock seams
  • Form fit, natural rise
  • Interlock knit
  • Covered elastic band

Your Price: $95.00
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SmartWool NTS Midweight 250 Bottom for Men

SKU: SMTTTM

  • Midweight baselayer
  • Covered elastic waistband
  • Traditional fly design
  • Form fit and mid rise

Your Price: $95.00
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Sale

Regular: $109.95 $15.00 (14%)

Your Price: $94.95
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SmartWool Midweight Bottom for Men

SKU: SMTMBM

  • Form Fit 
  • UPF 50+
  • Traditional fly design
  • Flatlock seam construction 
  • Two color choices

List: $95.00

Your Price: $94.95
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SmartWool NTS Midweight 250 Boot Top Bottom for Men

SKU: SMTTBM

  • Boot top length
  • Covered elastic waistband
  • Traditional fly design
  • Interlock knit

Your Price: $90.00
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Icebreaker Lightweight Oasis Leggings for Men

SKU: ICBLOLM

  • Odor resistant
  • Breathable
  • Lightweight
  • Merino wool
  • Lightweight

Your Price: $89.99
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SmartWool NTS Midweight 250 Boot Top Bottom for Women

SKU: SMTBBW

  • Flatlock seam construction
  • Form fitting, natural rise
  • Interlock knit
  • Breathable, odor resistant

Your Price: $89.99
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Sale

Regular: $109.95 $20.00 (18%)

Your Price: $89.95
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List: $85.00

Your Price: $84.95
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Sale

Regular: $99.95 $15.00 (15%)

Your Price: $84.95
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Minus33 Kenai Women's Expedition Weight Bottoms

SKU: MINEBW

  • Merino wool
  • Interlock construction
  • Flat lock seams
  • Machine washable

List: $95.99 $14.00 (15%)

Your Price: $81.99
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