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 Merino Wool MidWeight Crew Neck - Men's

Mossy Oak Infinity

SKU: MINMCMMO

  • 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: $89.99 $13.50 (15%)

Your Price: $76.49
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ColdPruf Classic 170 Silk Weight Merino Wool Crew for Men

SKU: CLDCCM

  • Merino wool
  • 5 ounce silk weight
  • Single layer jersey knit
  • Tagless, flat seams

Regular: $46.99 $12.00 (26%)

Starting at: $34.99
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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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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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ColdPruf Authentic Wool Plus 92 Crew for Men

SKU: CLDAWCM

  • Ring spun cotton, Merino wool, nylon
  • Combed, ring spun cotton
  • Inner layer body heat
  • Rib knit cuffs

Regular: $22.99 $3.00 (13%)

Starting at: $19.99
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ColdPruf Classic 170 Silk Weight Merino Wool Pants for Men

SKU: CLDCPM

  • Merino wool
  • 5 ounce silk weight
  • Single layer jersey knit
  • Tagless, flat seams

Regular: $46.99 $7.00 (15%)

Starting at: $39.99
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Top Rated Gear

Terramar Men's Thermolator II Crew with Mesh Shirt

4.5
(4 reviews)
Ratings Distribution
  • 5 Stars
     
    (2)
  • 4 Stars
     
    (2)
  • 3 Stars
     
    (0)
  • 2 Stars
     
    (0)
  • 1 Stars
     
    (0)

SKU: TRMMT2C

  • 86% Micro-Polyester and 14% Spandex
  • Qwik-Dri Thermoregulation Comfort Technology
  • Two Fabric Jersey and Mesh Construction
  • Anti-microbial
  • Fabric Weight: 180 grams (5.36 oz.)

Your Price: $24.95
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List: $65.99 $9.50 (14%)

Your Price: $56.49
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In Stock + Wish list

Sale

ColdPruf Authentic Wool Plus 92 Pants for Men

SKU: CLDAWPM

  • Ring spun cotton, Merino wool, nylon
  • Combed, ring spun cotton
  • Inner layer body heat
  • Rib ankle cuffs

Regular: $22.99 $3.00 (13%)

Starting at: $19.99
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Terramar Men's Thermolator II Half-Zip with Mesh Shirt

SKU: TRMMT2H

  • 86% Micro-Polyester and 14% Spandex
  • Qwik-Dri Thermoregulation Comfort Technology
  • Two Fabric Jersey and Mesh Construction
  • Ergonomic Zipper Pull
  • Anti-microbial

List: $31.95 $4.00 (13%)

Starting at: $27.95
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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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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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Minus33 Merino Wool Mid Weight 1/4 Length Zip for Women

SKU: MINMWQZW

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

List: $75.99 $11.00 (14%)

Your Price: $64.99
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List: $65.99 $9.50 (14%)

Your Price: $56.49
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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

Your Price: $79.95
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SmartWool NTS Midweight 250 Crew for Women

SKU: SMTMIW

  • Midweight baselayer
  • Body enhancing fit
  • Flatlock seams
  • Moisture wicking

Your Price: $95.00
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List: $75.99 $11.00 (14%)

Your Price: $64.99
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Under Armour Coldgear Infrared Devo 1/4-Zip for Men

SKU: UNACIDZM

  • Dual layer fabric
  • ColdGear infrared tech
  • 4 way stretch
  • Moisture transport

Regular: $79.99 $30.04 (38%)

Your Price: $49.95
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Terramar Men's Thermolator II Pants

5.0
(1 review)
Ratings Distribution
  • 5 Stars
     
    (1)
  • 4 Stars
     
    (0)
  • 3 Stars
     
    (0)
  • 2 Stars
     
    (0)
  • 1 Stars
     
    (0)

SKU: TRMMT2P

  • 86% Micro-Polyester and 14% Spandex
  • ec2 Qwik-Dri Thermoregulation Comfort Technology
  • Two Fabric Jersey and Mesh Construction
  • Anti-microbial
  • Fabric Weight: 180 grams (5.36 oz.)

Your Price: $24.95
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In Stock + Wish list