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.

Polarmax Double Base Layer Pants for Women

4.0 (1 review)
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SKU: PMXDBLPW

  • Quick drying
  • Scent prevent anti-microbial
  • Comfortable flat seams
  • Relaxed fit
  • Feels like cotton

Your Price: $20.95
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Polarmax 4-Way Stretch Zip Mock for Women

SKU: PMXSSZMW

  • 4-Way stretch XG fabric
  • Quick drying
  • Scent prevent anti-microbial
  • Comfortable flat seams
  • Athletic fit

Your Price: $34.95
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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 $5.00 (11%)

Starting at: $41.99
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SmartWool Midweight Bottom for Women

SKU: SMTMBW

  • Fabric Covered Elastic Waistband
  • 100% Merino Wool
  • Form Fit - Natural Rise
  • Interlock Knit
  • UPF 50+

List: $94.95 $26.00 (27%)

Starting at: $68.95
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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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ColdPruf Classic 170 Silk Weight Merino Wool Pants for Women

SKU: CLDCPW

  • 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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Icebreaker Tech Top Long Sleeve Midweight Crewe for Women

SKU: ICBTLMCW

  • Odor resistant
  • Breathable
  • Merino wool
  • Offset shoulders
  • Midweight

Your Price: $99.99
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Polarmax Maxride Crew for Men

SKU: PMXMRCM

  • Layering piece or wear alone
  • Contrast stitch
  • Machine wash & dry, no shrinking
  • Lightweight rib knit 
  • Anti-microbial and scent prevent

Your Price: $17.95
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Regular: $11.99 $2.00 (17%)

Starting at: $9.99
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Marmot ThermalClime Pro Tight for Women

SKU: MRMTPTW

  • Flat locked seams
  • Gusseted crotch
  • Moisture wicking
  • Quick drying

Your Price: $45.00
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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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ColdPruf Platinum Crew for Women

SKU: CLDPCW

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

Your Price: $19.99
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Terramar Ecolator CS Fleece Scoop 3.0 for Women

SKU: TRMECS3W

  • Comfort in all seasons
  • Antimicrobial
  • Heavyweight
  • Breathable

Your Price: $25.95
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Polarmax Maxride Crew for Women

SKU: PMXMRCW

  • Layering piece, or wear it alone
  • Contrast stitch
  • Machine wash & dry, no shrinking
  • Lightweight rib knit
  • Anti-microbial to prevent any scent

Your Price: $17.95
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Marmot ThermalClime Pro Boot Long Sleeve Crew for Men

SKU: MRMTPLCM

  • Flat locked seams
  • Recycled polyester
  • Polartec technology
  • Moisture wicking

Regular: $50.00 $17.05 (34%)

Your Price: $32.95
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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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SmartWool NTS Microweight 150 Crew Top for Men

SKU: SMTMCMN

  • Merino Wool
  • Stripe Tape Binding
  • Flatlock Seam Construction
  • Jersey Knit

List: $75.00 $19.05 (25%)

Your Price: $55.95
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Columbia Midweight II Long Sleeve Half Zip for Women

SKU: COLM2HZW

  • Advanced thermal reflective
  • Moisture wicking capabilities
  • Active fit
  • Antimicrobial

Regular: $50.00 $25.05 (50%)

Your Price: $24.95
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Polarmax Maxride Pants for Men

1.0 (1 review)
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  • 3 Stars
     
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  • 2 Stars
     
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SKU: PMXMRPM

  • Layering piece or wear alone
  • Contrast stitch
  • Machine wash & dry, no shrinking
  • Lightweight rib knit
  • Anti-microbial and scent prevent

Your Price: $17.95
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The North Face Light Boot Top Bottom for Men

SKU: NFCLBTBM2XBK

  • Elastic logo waist
  • Flat-locked seams
  • Fly opening
  • Three-quarter length
  • Moisture-wicking polyester knit fabric

Regular: $45.00 $25.05 (56%)

Your Price: $19.95

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