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 Authentic Wool Plus 92 Crew for Men

SKU: CLDAWCM

  • Ring spun cotton, Merino wool, nylon
  • Combed, ring spun cotton
  • Inner layer body heat
  • Rib knit cuffs

Regular: $22.99 $2.00 (9%)

Starting at: $20.99
Select Options

In Stock + Wish list

Sale

Polarmax Micro H2 Base Layer Zip Mock for Men

SKU: PMXMHZM

  • Acclimate dry polyester
  • Weight 0.5 lb.
  • Ventilating zip neck
  • Plaited construction

Regular: $32.95 $8.00 (24%)

Your Price: $24.95
Select Options

In Stock + Wish list

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
Select Options

In Stock + Wish list

Sale

ColdPruf Classic 170 Silk Weight Merino Wool Pants for Men

SKU: CLDCPM

  • Merino wool
  • 5 ounce silk weight
  • Single layer jersey knit
  • Tagless, flat seams

Regular: $46.99 $5.00 (11%)

Starting at: $41.99
Select Options

In Stock + Wish list

Sale

ColdPruf Basic 90 Crew for Men

SKU: CLDBCM

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

Regular: $11.99 $1.00 (8%)

Starting at: $10.99
Select Options

In Stock + Wish list

Sale

SmartWool Microweight Bottom for Men

SKU: SMTMCBM

  • Made of 100% Merino Wool
  • Form Fit - Natural Rise
  • Jersey knit
  • Coats Eloflex thread
  • Flatlock seam construction

Regular: $62.99 $20.00 (32%)

Your Price: $42.99
Select Options

In Stock + Wish list

Polarmax Maxride Crew for Men

SKU: PMXMRCM

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

Your Price: $17.95
Select Options

In Stock + Wish list

Sale

ColdPruf Enthusiast 97 Crew for Men

SKU: CLDECM

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

Regular: $13.99 $2.00 (14%)

Starting at: $11.99
Select Options

In Stock + Wish list

Sale

Marmot ThermalClime Pro Boot Long Sleeve Crew for Men

SKU: MRMTPLCM

  • Flat locked seams
  • Recycled polyester
  • Polartec technology
  • Moisture wicking

Regular: $50.00 $17.05 (34%)

Your Price: $32.95
Select Options

In Stock + Wish list

ColdPruf Extreme Performance Bottom for Men

SKU: CLDEPBM

  • CPT fiber technology
  • Two-layer engineering
  • Dryness and odor control
  • Moisture management 
  • Warmth barrier

Your Price: $30.99
Select Options

In Stock + Wish list

Sale

ColdPruf Premium Performance 89 Crew for Men

SKU: CLDPPCM

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

Regular: $20.99 $3.00 (14%)

Starting at: $17.99
Select Options

In Stock + Wish list

Polarmax Maxride Pants for Men

1.0 (1 review)
Ratings Distribution
  • 5 Stars
     
    (0)
  • 4 Stars
     
    (0)
  • 3 Stars
     
    (0)
  • 2 Stars
     
    (0)
  • 1 Stars
     
    (1)

SKU: PMXMRPM

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

Your Price: $17.95
Select Options

In Stock + Wish list

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 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
Select Options

In Stock + Wish list

SmartWool NTS Micro 150 Pattern Crew for Men

SKU: SMTMPM

  • Form fitting Jersey knit
  • Crew with set-in sleeves
  • Shoulder panels
  • Flatlock seam construction

List: $79.95 $19.96 (25%)

Your Price: $59.99
Select Options

In Stock + Wish list

Sale

Coldpruf Extreme Performance Crew for Men

SKU: CLDEPCM

  • CPT Fiber Technology
  • Two-Layer Engineering
  • Traps Air Between Layers
  • 96% CPT Performance Polyester
  •  4% Spandex

Regular: $30.99 $9.00 (29%)

Starting at: $21.99
Select Options

In Stock + Wish list

Sale

Mountain Hardwear Double Wicked Short Sleeve T for Men

2.0 (1 review)
Ratings Distribution
  • 5 Stars
     
    (0)
  • 4 Stars
     
    (0)
  • 3 Stars
     
    (0)
  • 2 Stars
     
    (1)
  • 1 Stars
     
    (0)

SKU: MHWDWSM

  • Antimicrobial finish, Controls Odour
  • Apparel Fit Standard
  • Flat-Look Seam Construction
  • Classic Wicking Tee, Fast Drying Fabric

Regular: $38.00 $21.05 (55%)

Starting at: $16.95
Select Options

In Stock + Wish list

Minus33 Katmai Expedition Weight Bottoms for Men

SKU: MINEBM

  • Merino wool
  • Interlock construction
  • Flat lock seams
  • Machine washable

List: $95.99 $14.00 (15%)

Your Price: $81.99
Select Options

In Stock + Wish list

Sale

Columbia Midweight II Long Sleeve Top for Men

SKU: COLM2LTM

  • Thermal reflective
  • Wicking technology
  • Active fit
  • Antimicrobial

Regular: $45.00 $21.05 (47%)

Your Price: $23.95
Select Options

In Stock + Wish list

Terramar Men's Thermawool CS 4.0 Crew

SKU: TRMMTW4C

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

Your Price: $26.95
Select Options

In Stock + Wish list