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.

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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List: $65.99 $9.50 (14%)

Your Price: $56.49
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Minus33 Chocorua Men's Mid-Weight Crew

SKU: MINMWCM

  • 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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Ibex Woolies 3 Pullover for Women

SKU: IBX3PW

  • Breathable
  • Anti-odor
  • Raglan sleeves
  • Brushed exterior

Your Price: $115.00
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List: $65.99 $9.50 (14%)

Your Price: $56.49
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Mammut Long Pants Warm-Quality Thermal Underwear for Men

SKU: MMTLPWQM

  • Fast drying
  • Antimicrobial feature
  • Material: 83% Polyester, 17% Wool
  • Body zone fabric design

Regular: $80.00 $45.05 (56%)

Your Price: $34.95
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Arc'teryx RHO LT Zip Neck for Women

SKU: ARCLZNW

  • Moisture-wicking
  • Warm when wet
  • Resists odors
  • Flatlock seams

Regular: $119.00 $39.05 (33%)

Starting at: $79.95
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Regular: $65.00 $34.05 (52%)

Starting at: $30.95
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Ibex Woolies 1 Crew Stripe for Men

SKU: IBX15M

  • Breathable
  • Anti-odor
  • Raglan sleeves
  • Flatlock seams

Your Price: $85.00
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Ibex Woolies 2 Crew Stripe for Men

SKU: IBXCSM

  • Breathable
  • Anti-odor
  • Set-in sleeves
  • Flatlock seams

List: $110.00 $33.05 (30%)

Your Price: $76.95
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Terramar Ecolator CS Fleece Half-Zip 3.0 for Women

SKU: TRMECH3W

  • Comfort in all seasons
  • Antimicrobial
  • Heavyweight
  • Breathable

Your Price: $38.95
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ColdPruf Authentic 93 Pants for Men

SKU: CLDAPM

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

Regular: $20.99 $3.00 (14%)

Your Price: $17.99
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Polarmax Core 3.0 LongSleeve Crew Mens

SKU: PMXC3LCM

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

Your Price: $44.95
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Regular: $94.95 $34.96 (37%)

Starting at: $59.99
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Ibex Woolies 1 Bottoms for Men

SKU: IBX1BM

  • Breathable
  • Anti-odor
  • Wide waistband
  • Flatlock seams

Your Price: $80.00
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Terramar Ecolator CS Fleece Scoop 3.0 for Women

SKU: TRMECS3W

  • Comfort in all seasons
  • Antimicrobial
  • Heavyweight
  • Breathable

Your Price: $31.95
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ColdPruf Authentic Union Suit for Men

SKU: CLDAUM

  • Two-layer engineering
  • Vertical rear flap
  • Natural warmth barrier
  • ThermaChoice System

Your Price: $42.99
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Regular: $19.99 $5.00 (25%)

Starting at: $14.99
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ColdPruf Classic 170 Silk Weight Merino Wool Crew for Women

SKU: CLDCCW

  • Single layer jersey knit
  • Silk weight
  • Merino wool
  • Tagless, flat seams

Regular: $45.99 $11.00 (24%)

Starting at: $34.99
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