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 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

    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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    Sale

    ColdPruf Performance 98 Crew for Men

    SKU: CLDPRCM

    • Single layer engineering
    • Max dryness, antimicrobial
    • Moisture management
    • Polyester, spandex

    Regular: $18.99 $2.00 (11%)

    Your Price: $16.99
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    Sale

    Terramar Men's Helix Short-Sleeve Polyester Crew T-Shirt

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

    SKU: TRMMHS

    • ec2 Qwik-Dri Thermoregulation Comfort Technology
    • Anti-Microbial Fabric
    • Air pockets for Improved Insulation
    • Soft, Breathable and Fast-Drying
    • UPF Rating 25+

    Regular: $11.95 $3.00 (25%)

    Starting at: $8.95
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    Sale

    ColdPruf Performance 58 Crew for Women

    SKU: CLDPRCW

    • Single layer engineering
    • Max dryness, antimicrobial
    • Moisture management
    • Polyester, spandex

    Regular: $18.99 $2.00 (11%)

    Starting at: $16.99
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    Under Armour Base 2.0 Crew for Men

    SKU: UNAB2CM

    • Mid-weight protection
    • Soft, brushed interior
    • 4-way stretch fabrication
    • Moisture transport system

    List: $54.99 $16.04 (29%)

    Starting at: $38.95
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    Terramar Thermasilk Filament Jersey Silk Crew Shirt for Men

    SKU: TRMMSC

    • 100% Supersoft Pure Filament Jersey Silk
    • ec2 Qwik-Dri Thermoregulation Comfort Technology
    • Lightweight
    • Durable
    • Fabric Weight: 75 grams (2.6 oz.)

    Your Price: $27.95
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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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    Top Rated Gear

    List: $75.99 $11.00 (14%)

    Your Price: $64.99
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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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    List: $54.99 $16.04 (29%)

    Your Price: $38.95
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    Sale

    The North Face Warm Longsleeve Crew Neck for Men - Previous Season

    SKU: NFCWLCM

    • Crew neck
    • Length from Center Back: 28.5 in.
    • Long sleeves
    • FlashDry technology
    • Partial stretch fabrication

    Regular: $50.00 $25.05 (50%)

    Your Price: $24.95
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    Sale

    SmartWool Midweight Zip T for Men

    SKU: SMTMZM

    • 100% Merino Wool
    • Form fit
    • 10 in. center front zip
    • Flatlock seam construction eliminates chafing
    • Shoulder panels

    Regular: $85.99 $30.00 (35%)

    Starting at: $55.99
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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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    Sale

    Marmot ThermalClime Sport LS Crew Shirt for Men

    SKU: MRMTLSCM

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

    Regular: $42.00 $17.05 (41%)

    Your Price: $24.95
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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: $18.95
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    Icebreaker Midweight Tech Top Long Sleeve Crewe for Men

    SKU: ICBMTLCM

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

    List: $109.99 $10.00 (9%)

    Starting at: $99.99
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    Sale

    The North Face Warm Longsleeve Crew Neck for Men

    SKU: NFCWLCMN

    • Moisture wicking
    • Next to skin fit
    • Crew neck
    • Flat locked seams
    • Moisture wicking

    Regular: $50.00 $25.05 (50%)

    Your Price: $24.95
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    Sale

    SmartWool Midweight Crew Top for Men

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

    SKU: SMTMDCM

    • 100% Merino Wool
    • Form Fit
    • Crew neck with set-in sleeves
    • Shoulder panels
    • Flatlock seam construction

    Regular: $85.99 $37.99 (44%)

    Starting at: $48.00
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