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

ColdPruf Basic 90 Crew for Men

SKU: CLDBCM

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

Regular: $11.99 $1.00 (8%)

Starting at: $10.99
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Sale

ColdPruf Enthusiast 97 Crew for Men

SKU: CLDECM

  • 100 percent polypropylene
  • Single layer engineering
  • Lightweight, comfortable fit
  • Flat seams

Regular: $13.99 $2.00 (14%)

Starting at: $11.99
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Sale

Regular: $11.99 $2.00 (17%)

Starting at: $9.99
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ColdPruf Platinum Crew for Women

SKU: CLDPCW

  • Polyester
  • Flat Seams
  • Ring Spun Yarns
  • Thermachoice System

Your Price: $19.99
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Sale

ColdPruf Premium Performance 89 Crew for Men

SKU: CLDPPCM

  • Single layer engineering
  • Polyester, spandex
  • Max dryness, antimicrobial
  • Trim fit

Regular: $20.99 $3.00 (14%)

Starting at: $17.99
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Sale

Mountain Hardwear Wicked Lite T-Shirt Short Sleeve for Women

SKU: MHWWLSWN

  • Wicking, fast drying fabric
  • Antimicrobial finish controls odor
  • Flat-lock seam construction eliminates chafe
  • Reflective trim for visibility
  • MHW classic wicking tee

Regular: $35.00 $19.05 (54%)

Your Price: $15.95
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Sale

ColdPruf Premium Performance 49 Crew for Women

SKU: CLDPPCW

  • Single layer engineering
  • Polyester, spandex
  • Max dryness, antimicrobial
  • Trim fit

Regular: $20.99 $6.00 (29%)

Starting at: $14.99
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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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Terramar Cloud Nine CS Scoop 2.0 Shirt for Women

SKU: TRMCNS2W

  • Stretch jersey
  • Moisture wicking
  • Fast drying
  • Breathable

Your Price: $17.95
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Sale

Marmot ThermalClime Pro LS Crew for Women

SKU: MRMTPLSW

  • Quick drying
  • Moisture wicking
  • Stretch elastane
  • Flat lock seams

Regular: $50.00 $18.05 (36%)

Your Price: $31.95
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Sale

ColdPruf Expedition 85 Crew for Men

SKU: CLDEXCM

  • 100 percent polyester fleece
  • Moisture management
  • Single-layer engineering
  • Tagless

Regular: $15.99 $2.00 (13%)

Starting at: $13.99
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Terramar Trailhead TR Half-Zip 1.0 Crew for Men - Black

SKU: TRMT1ZM

  • Color: black
  • Material: 100% micro polyester
  • Two-sided knit construction
  • Antimicrobial feature
  • Flat-seam construction

Your Price: $15.95
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Minus33 Denali Expedition Weight Full Zip Top for Men

SKU: MINEFM

  • Merino wool
  • Interlock construction
  • Flat lock seams
  • Rib knit cuffs

List: $119.99 $18.00 (15%)

Your Price: $101.99
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Sale

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 $5.00 (11%)

Your Price: $41.99
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Top Rated Gear

List: $75.99 $11.00 (14%)

Your Price: $64.99
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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: $28.95
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Sale

The North Face Light Longsleeve Zip Neck for Women

SKU: NFCLLZWXSBK

  • Material: polyester, polyolefin
  • Half-length zipper
  • Flat-locked seams
  • FlashDry microparticles
  • Weight: 3.7 oz.

Regular: $50.00 $25.05 (50%)

Your Price: $24.95

In Stock + Wish list

Sale

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 $5.00 (11%)

Starting at: $40.99
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Marmot ThermalClime Pro LS 1/2-Zip for Men

SKU: MRMTP2ZM

  • Quick drying
  • Moisture wicking
  • Stretch elastane
  • Flat lock seams

Your Price: $60.00
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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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