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

Regular: $34.95 $5.00 (14%)

Starting at: $29.95
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Sale

Mammut Go Warm Baselayer 3/4 Pants for Women

SKU: MMTGW3PW

  • Contoured cut
  • 100% polyester microfiber
  • Antimicrobial feature
  • Merino wool and polyester blend

Regular: $49.00 $19.05 (39%)

Starting at: $29.95
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Sale

Regular: $38.95 $4.00 (10%)

Starting at: $34.95
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Ibex Woolies 3 Bottoms for Women

SKU: IBX3BW

  • Breathable
  • Anti-odor
  • Gusseted crotch
  • Flatlock seams

List: $110.00 $33.05 (30%)

Your Price: $76.95
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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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Minus33 Merino Wool Midweight Bottoms for Boys

SKU: MINMBB

  • 100 percent merino wool
  • Moisture wicking
  • Odor repellent
  • UPF 50

List: $45.99 $6.50 (14%)

Your Price: $39.49
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Marmot ThermalClime Sport Tight for Women

SKU: MRMTSTW

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

Regular: $38.00 $13.05 (34%)

Starting at: $24.95
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ColdPruf Platinum Bottom for Men

5.0
(1 review)
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SKU: CLDPBM

  • CPT fiber technology
  • Two-layer engineering
  • Air-trap design
  • 100% CPT polyester inside
  • 70% polyester, 30% merino wool outside

Regular: $19.99 $5.00 (25%)

Starting at: $14.99
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ColdPruf Basic 50 Pants for Women

SKU: CLDBPW

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

Regular: $11.99 $4.00 (33%)

Starting at: $7.99
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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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Icebreaker Midweight Apex Leggings for Men

SKU: ICBMALM

  • Anti chafe seams
  • Odor resistant
  • Breathable
  • Gusseted for comfort
  • Merino wool

List: $109.99 $10.04 (9%)

Starting at: $99.95
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The North Face Light Boot Top Bottom for Men

SKU: NFCLBTBM2XBK

  • Elastic logo waist
  • Flat-locked seams
  • Fly opening
  • Three-quarter length
  • Moisture-wicking polyester knit fabric

Regular: $45.00 $25.05 (56%)

Your Price: $19.95

In Stock + Wish list

Sale

ColdPruf Performance 58 Pants for Women

SKU: CLDPRPW

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

Regular: $18.99 $4.00 (21%)

Starting at: $14.99
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List: $85.00

Your Price: $84.95
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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

Regular: $19.99 $3.00 (15%)

Starting at: $16.99
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Minus33 Saratoga Men's Lightweight Bottoms

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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List: $65.99 $9.50 (14%)

Your Price: $56.49
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SmartWool NTS Midweight 250 Pattern Bottom for Men

SKU: SMTPNM

  • Heaviest baselayer fabric
  • Covered elastic waistband
  • Traditional fly design
  • Flatlock seams

Your Price: $99.99
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SmartWool NTS Micro 150 Bottom for Men

SKU: SMTBTM

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

List: $75.00

Your Price: $74.95
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SmartWool PhD Wind Tight for Men

SKU: SMTWTM

  • PhD performance
  • 360 degree reflectivity
  • Drawcord at waist
  • Windproof front panel

Your Price: $139.99
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