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

Polarmax Micro H2 Base Layer Zip Mock for Women

SKU: PMXMHZW

  • Flat seams
  • Antimicrobial
  • Quick dry
  • Front zipper

Regular: $32.95 $8.00 (24%)

Your Price: $24.95
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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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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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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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Polarmax Maxride Pants for Men

1.0 (1 review)
Ratings Distribution
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  • 4 Stars
     
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  • 3 Stars
     
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  • 1 Stars
     
    (1)

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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In Stock + Wish list

Sale

Regular: $11.99 $2.00 (17%)

Starting at: $9.99
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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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SmartWool Midweight Crew Top for Women

SKU: SMTMDCW

  • Upf 50+ protection
  • Back Body Seam Wraps
  • Shoulder Panels
  • Flatlock Seam Construction 
  • Heat Transfer Logo

List: $95.00 $25.01 (26%)

Your Price: $69.99
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Sale

Polarmax Maxride Pants for Women

2.0 (1 review)
Ratings Distribution
  • 5 Stars
     
    (0)
  • 4 Stars
     
    (0)
  • 3 Stars
     
    (0)
  • 2 Stars
     
    (1)
  • 1 Stars
     
    (0)

SKU: PMXMRPW

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

Regular: $17.95 $3.00 (17%)

Starting at: $14.95
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ColdPruf Basic 60S Top and Bottom Base Layer Set for Kids

SKU: CLDBK

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

Your Price: $22.99
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ColdPruf Extreme Performance Bottom for Men

SKU: CLDEPBM

  • CPT fiber technology
  • Two-layer engineering
  • Dryness and odor control
  • Moisture management 
  • Warmth barrier

Your Price: $30.99
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Icebreaker Lightweight Oasis Long Sleeve Crewe for Men

SKU: ICBLOLCM

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

Your Price: $89.99
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Sale

ColdPruf Basic 90 Pants for Men

SKU: CLDBPM

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

Regular: $11.99 $1.00 (8%)

Starting at: $10.99
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Sale

Marmot ThermalClime Sport Tight for Women

SKU: MRMTSTW

  • Flat locked seams
  • Gusseted crotch
  • Recycled polyester
  • Polartec power dry

Regular: $38.00 $13.05 (34%)

Your Price: $24.95
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Sale

Coldpruf Extreme Performance Crew for Men

SKU: CLDEPCM

  • CPT Fiber Technology
  • Two-Layer Engineering
  • Traps Air Between Layers
  • 96% CPT Performance Polyester
  •  4% Spandex

Regular: $30.99 $9.00 (29%)

Starting at: $21.99
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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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Icebreaker Lightweight Oasis Leggings for Men

SKU: ICBLOLM

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

Your Price: $89.99
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Sale

ColdPruf Basic 50 Pants for Women

SKU: CLDBPW

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

Regular: $11.99 $2.00 (17%)

Starting at: $9.99
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Minus33 Katmai Expedition Weight Bottoms for Men

SKU: MINEBM

  • Merino wool
  • Interlock construction
  • Flat lock seams
  • Machine washable

List: $95.99 $14.00 (15%)

Your Price: $81.99
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Sale

ColdPruf Enthusiast 97 Pants for Men

SKU: CLDEPM

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

Regular: $13.99 $1.00 (7%)

Starting at: $12.99
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In Stock + Wish list