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.

Icebreaker Oasis Lightweight Leggings for Women

SKU: ICBOLLW

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

List: $89.99 $22.00 (24%)

Starting at: $67.99
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List: $65.99 $9.50 (14%)

Your Price: $56.49
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Adidas Techfit Capri Tight for Women

SKU: ADSTCTW

  • Moisture wicking
  • Advanced Techfit fabric
  • Anti chafe waistband
  • Side panels

Regular: $40.00 $17.05 (43%)

Your Price: $22.95
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Polarmax Montana Wool 2.0 Pant Mens

SKU: PMXMWP2M

  • Stretchy
  • Moisture wicking
  • Breathable, quick drying
  • Anti-microbial

Your Price: $69.95
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Minus33 Merino Wool MidWeight Bottoms - Men's

Mossy Oak Infinity

SKU: MINMBMMO

  • Merino wool
  • Interlock knit construction
  • Flat lock seams
  • Machine wash, dry

List: $80.99 $12.00 (15%)

Your Price: $68.99
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List: $54.99 $17.04 (31%)

Your Price: $37.95
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Polarmax Core-4 Tech Fleece Tights for Men

SKU: PMXC4TTM

  • 4-way power stretch fabric
  • Tech face
  • Brushed fleece interior
  • No shrink
  • Athletic Fit

Your Price: $43.95
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SmartWool NTS Micro 150 Pattern Bottom for Women

SKU: SMTTBW

  • Flatlock seam construction designed to eliminate chafing
  • Form fit and natural rise
  • Jersey knit
  • Moisture wicking

Your Price: $79.99
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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 Pattern Bottom for Women

SKU: SMTBPW

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

Your Price: $99.99
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Marmot Catalyst 3/4 Rev. Tight for Women

SKU: MRMC3RTW

  • Midweight, breathable
  • UPF 50
  • Quick drying and wicking
  • Reversible

Regular: $65.00 $34.05 (52%)

Your Price: $30.95
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ColdPruf Authentic 93 Pants for Men

SKU: CLDAPM

  • Two layer engineering
  • Natural warmth barrier
  • Tagless
  • Flat seams

Regular: $20.99 $2.00 (10%)

Starting at: $18.99
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SmartWool NTS Micro 150 Bottom for Men

SKU: SMTBTM

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

List: $75.00

Your Price: $74.95
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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

Your Price: $79.95
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Under Armour The Original 6 in. Boxerjock Boxer Briefs

SKU: UNAOBB

  • Lightweight, HeatGear fabric
  • Articulated mesh fly panel
  • 4-Way Stretch fabrication 
  • Signature Moisture Transport System
  • Anti-odor technology

List: $20.00 $6.05 (30%)

Your Price: $13.95
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Terramar Men's Thermawool CS 4.0 Pants

SKU: TRMMTW4P

  • Climasense fabric
  • Advanced odor control
  • Wicking, fast drying
  • Retains heat, breathable

List: $34.95 $6.00 (17%)

Starting at: $28.95
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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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Minus33 Kancamagus Men's Mid-Weight Bottoms

SKU: MINMWBM

  • 100% 18.5 Micron Merino Wool
  • 230 g/m2 Interlock knit construction
  • Flat lock seams

List: $65.99 $9.50 (14%)

Your Price: $56.49
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Icebreaker Everyday Leggings for Men (w/Fly)

SKU: ICBEVLM

  • Gusset
  • Material: Merino wool
  • UPF rating: 50+
  • Machine-washable
  • Flat-lock seams

Your Price: $59.99
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Columbia Luminescence Spacedye Legging for Women

SKU: COLSLW

  • Moisture wicking
  • 4-way comfort stretch
  • Flatlocked construction
  • Stash pocket

Regular: $65.00 $23.05 (35%)

Your Price: $41.95
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