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 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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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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Adidas Ultimate 3/4 Tight for Women

SKU: ADSUT34T

  • Wide elastic waistband
  • Climalite fabric
  • Fitted fit
  • Adidas logo on hip

Your Price: $38.00
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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

Adidas Ultimate Tight for Women

SKU: ADSUTW

  • Wide elastic waistband
  • Climalite fabric
  • Fitted fit
  • Flatlock seams

Regular: $43.00 $18.05 (42%)

Starting at: $24.95
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Marmot ThermalClime Pro Boot Tight for Men

SKU: MRMTPBTM

  • Flat locked seams
  • Gusseted crotch
  • Recycled polyester
  • Polartec technology

Your Price: $42.00
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List: $95.00 $23.00 (24%)

Your Price: $72.00
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Sale

Mammut Go Dry Boxer for Men

SKU: MMTGDBM

  • Contoured cut
  • Freedom of movement
  • Youthful design
  • Fast drying
  • Antimicrobial

Regular: $29.00 $12.05 (42%)

Starting at: $16.95
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Sale

Regular: $79.99 $24.00 (30%)

Your Price: $55.99
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Sale

The North Face Warm Boot Top Bottom for Men

SKU: NFCWBTBM2XBK

  • Elastic logo waist
  • Fly opening
  • Flat-locked seams
  • Three-quarter length
  • Midweight base layer pants 

Regular: $50.00 $25.05 (50%)

Your Price: $24.95

In Stock + Wish list

Icebreaker Midweight Vertex Leggings for Women

SKU: ICBMVLW

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

Your Price: $99.99
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Sale

SmartWool NTS Micro 150 Bottom for Men

SKU: SMTBTM

  • Lightweight base layer
  • Form fitting Jersey knit
  • Flatlock seams
  • Fully functional fly

Regular: $62.99 $20.00 (32%)

Starting at: $42.99
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SmartWool Midweight Bottom for Men

SKU: SMTMBM

  • Form Fit 
  • UPF 50+
  • Traditional fly design
  • Flatlock seam construction 
  • Two color choices

List: $95.00 $25.01 (26%)

Your Price: $69.99
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Sale

ColdPruf Performance 98 Pants for Men

SKU: CLDPRPM

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

Regular: $18.99 $2.00 (11%)

Starting at: $16.99
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Icebreaker Everyday Leggings for Women

SKU: ICBEVLW

  • Gusset
  • Flat-lock stitching
  • Icebreaker branded waistband
  • Icebreaker pip label
  • Material: Merino wool

Your Price: $59.99
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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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ColdPruf Platinum Bottom for Women

SKU: CLDPBW

  • CPT Fiber technology
  • Two-layer engineering
  • Traps air between layers
  • Inside: 100% CPT Performance polyester
  • Outside: 70% polyester, 30% merino wool

Your Price: $19.99
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List: $139.99 $34.99 (25%)

Your Price: $105.00
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