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.

Icebreaker Oasis Lightweight Leggings for Women

SKU: ICBOLLW

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

Your Price: $89.99
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Minus33 Merino Wool Lightweight Bottoms for Men

SKU: MINLBM

  • 100% Merino Wool
  • Jersey knit construction
  • Lightweight base layer
  • Flat lock seams
  • Machine washable 

List: $59.99 $9.00 (15%)

Your Price: $50.99
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Terramar Men's Thermawool CS 4.0 Pants

SKU: TRMMTW4P

  • Climasense fabric
  • Advanced odor control
  • Wicking, fast drying
  • Retains heat, breathable

Your Price: $28.95
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Minus33 Merino Wool Lightweight Bottoms for Women

SKU: MINLBW

  • 100% 17.5-micron Merino wool
  • 170 g/m2 jersey-knit construction
  • Flat-lock seams
  • Weight (size L): 6.1 oz. 
  • Machine-wash compatibility

List: $59.99 $9.00 (15%)

Your Price: $50.99
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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

Adidas Techfit 3/4 3-Stripe Tight for Women

SKU: ADS34T3S

  • Compression fit
  • Moisture wicking
  • Flat seams

Regular: $40.00 $15.05 (38%)

Starting at: $24.95
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Icebreaker Midweight Vertex Leggings for Women

SKU: ICBMVLW

  • Odor resistant
  • Breathable
  • Gusseted
  • Merino wool
  • Midweight

Your Price: $99.99
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ColdPruf Premium Performance 89 Pants for Men

SKU: CLDPPPM

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

Regular: $20.99 $2.00 (10%)

Starting at: $18.99
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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
     
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  • 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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Top Seller

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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Marmot Catalyst 3/4 Rev. Tight for Women

SKU: MRMC3RTW

  • Midweight, breathable
  • UPF 50
  • Quick drying and wicking
  • Reversible

Your Price: $65.00
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Marmot ThermalClime Sport Tight for Men

SKU: MRMTSTM

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

Your Price: $38.00
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Polarmax Powerskins by XGO Short for Men

SKU: PMXPSSM

  • Anti microbial
  • Won't shrink, pick, fade
  • Durable, breathable
  • Four way stretch

Your Price: $21.95
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List: $65.99 $9.50 (14%)

Your Price: $56.49
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The North Face Warm Tight for Men

SKU: NFCWTMN

  • Moisture wicking
  • Next to skin fit
  • Fly opening
  • Ankle length
  • Hollow core fibers

Regular: $50.00 $25.05 (50%)

Your Price: $24.95
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Adidas Techfit Capri Tight for Women

SKU: ADSTCTW

  • Moisture wicking
  • Advanced Techfit fabric
  • Anti chafe waistband
  • Side panels

Regular: $40.00 $17.05 (43%)

Your Price: $22.95
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Regular: $55.00 $25.05 (46%)

Your Price: $29.95
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ColdPruf Authentic 93 Pants for Men

SKU: CLDAPM

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

Regular: $20.99 $2.00 (10%)

Starting at: $18.99
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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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Columbia Midweight II Tight for Men

SKU: COLM2TM

  • Thermal reflective
  • Moisture wicking
  • Active fit
  • Antimicrobial

Regular: $45.00 $21.05 (47%)

Your Price: $23.95
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