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 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 Premium Performance 49 Pants for Women

    SKU: CLDPPPW

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

    Regular: $20.99 $6.00 (29%)

    Starting at: $14.99
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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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    Top Rated Gear

    Terramar Thermasilk Filament Silk Pant for Men

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

    SKU: TRMMSP

    • ec2 Qwik-Dri Thermoregulation Comfort Technology
    • 100% Silk
    • Non-bulky
    • Anti-Microbial
    • Luxurious, Soft and Comfortable

    Your Price: $27.95
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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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    Sale

    Adidas Techfit 3/4 3-Stripe Tight for Women

    SKU: ADS34T3S

    • Compression fit
    • Moisture wicking
    • Flat seams

    Regular: $40.00 $15.05 (38%)

    Your Price: $24.95
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    Sale

    Marmot Windridge Short Sleeve Shirt for Men

    SKU: MRMWSSM

    • Ultraviolet protection factor (UPF) 50
    • Knit, polyester fabric
    • Tag-free neckline
    • Flat-locked seams
    • Mesh panels

    Regular: $30.00 $10.05 (34%)

    Starting at: $19.95
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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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    List: $64.99 $19.04 (29%)

    Your Price: $45.95
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    Under Armour The Original 6 in. Boxerjock Boxer Briefs

    SKU: UNAOBB

    • Lightweight, HeatGear fabric
    • Articulated mesh fly panel
    • 4-Way Stretch fabrication 
    • Signature Moisture Transport System
    • Anti-odor technology

    List: $20.00 $6.05 (30%)

    Starting at: $13.95
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    SmartWool NTS Micro 150 Pattern Crew for Women

    SKU: SMTMPW

    • Form fitting Jersey knit
    • Stretch stitching
    • Side seams wrap to front
    • Tagless comfort
    • Form fitting

    List: $79.95 $19.96 (25%)

    Starting at: $59.99
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    List: $65.99 $9.50 (14%)

    Your Price: $56.49
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    Sale

    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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    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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    Polar Max Performance Tech Silk Crew for Men

    SKU: PMXPSCM

    • Lightweight mesh
    • Anti microbial
    • Wicks moisture
    • Stretchable, flexible

    Your Price: $21.95
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    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 $2.00 (9%)

    Starting at: $20.99
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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

    Columbia Base Layer Midweight Long Sleeve for Men

    SKU: COLBMLTM

    • Omni-Wick inserts
    • Omni-Heat thermal reflective lining
    • Antimicrobial treatment
    • Four-way stretch and ergonomic seaming
    • Material: polyester and elastane

    Regular: $55.00 $27.05 (49%)

    Your Price: $27.95
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    SmartWool Midweight Pattern Crew Top for Women

    SKU: SMTMPCW

    • 100% Merino Wool
    • Form Fitting 
    • Jacquard Knit 
    • Back Body Seam
    • Shoulder Panels

    List: $105.00 $27.01 (26%)

    Your Price: $77.99
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