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.

Ibex Woolies 3 Bottoms for Men

SKU: IBX3BM

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

Your Price: $110.00
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ColdPruf Authentic Union Suit for Men

SKU: CLDAUM

  • Two-layer engineering
  • Vertical rear flap
  • Natural warmth barrier
  • ThermaChoice System

Your Price: $42.99
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Sale

Regular: $34.95 $5.00 (14%)

Starting at: $29.95
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Ibex Woolies 1 Bottoms for Men

SKU: IBX1BM

  • Breathable
  • Anti-odor
  • Wide waistband
  • Flatlock seams

Your Price: $80.00
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Sale

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 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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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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The North Face Light Tight for Men - Previous Season

SKU: NFCLTM

  • Fly opening
  • Elastic logo waist
  • Flat-locked seams
  • FlashDry thermal technology
  • Material: polyester, polyolefin

Regular: $45.00 $18.05 (40%)

Your Price: $26.95
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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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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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Polarmax Montana Wool 2.0 Pant Mens

SKU: PMXMWP2M

  • Stretchy
  • Moisture wicking
  • Breathable, quick drying
  • Anti-microbial

Your Price: $69.95
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Icebreaker Midweight Apex Leggings for Men

SKU: ICBMALM

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

List: $109.99 $10.04 (9%)

Starting at: $99.95
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ColdPruf Enthusiast 97 Pants for Men

SKU: CLDEPM

  • 100 percent polypropylene
  • Single layer engineering
  • Lightweight, comfortable fit
  • Flat seams

Regular: $13.99 $1.00 (7%)

Starting at: $12.99
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Terramar Military Men Unionsuit

SKU: TRMMMU

  • Moisture wicking
  • Quick drying
  • Anti-bacterial
  • Flat seam construction

Your Price: $38.95
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Polarmax Maxride Pants for Men

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SKU: PMXMRPM

  • Layering piece or wear alone
  • Contrast stitch
  • Machine wash & dry, no shrinking
  • Lightweight rib knit
  • Anti-microbial and scent prevent

Your Price: $19.95
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Minus33 Merino Wool MidWeight Bottoms - Men's

Mossy Oak Infinity

SKU: MINMBMMO

  • Merino wool
  • Interlock knit construction
  • Flat lock seams
  • Machine wash, dry

List: $80.99 $12.00 (15%)

Your Price: $68.99
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ColdPruf Expedition 85 Pants for Men

SKU: CLDEXPM

  • 100 percent polyester fleece
  • Moisture management
  • Single-layer engineering
  • Tagless

Regular: $15.99 $2.00 (13%)

Starting at: $13.99
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The North Face Light Tight for Men

SKU: NFCLTMN

  • Hollow core fibers
  • Stain resistant
  • Flat-lock seams
  • Two-tone fabric

Regular: $45.00 $18.05 (40%)

Your Price: $26.95
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Polarmax 4-Way Stretch Tights for Men

SKU: PMXSSTM

  • 4-Way Stretch XG Fabric
  • Quick Drying
  • Scent Prevent Anti-Microbial
  • Comfortable Flat Seams
  • Athletic Fit

Your Price: $39.95
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SmartWool NTS Micro 150 Bottom for Men

SKU: SMTBMM

  • Flatlock seams
  • Form fit, mid rise
  • Fully functional fly
  • Elastic waistband

Your Price: $75.00
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