Base Layers & Mid Layers

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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

Sale - Arc'teryx Kyanite Hoodie for Men

5.0
3 reviews
Ratings Distribution

SKU: ARCKYM

Regular: $179.00

Sale , Starting at
$119.95

+ wishlist

  • Polartec Power Stretch Pro layering jacket
  • Warm, durable, and versatile
  • 4-way stretch fabric
  • Trim, slim fit

In Stock Free Shipping

Available in 6 colors

Your Price
$129.00

+ wishlist

  • Polartec Power Stretch Pro layering vest
  • Warm, durable, and versatile
  • 4-way stretch fabric
  • Trim, slim fit

In Stock Free Shipping

Available in 2 colors

Top Rated Gear
ARCRAZNM
Your Price
$145.00

+ wishlist

  • Moisture wicking
  • Great warmth-to-weight ratio
  • Flatlock construction
  • Collar zipper

In Stock Free Shipping

Available in 5 colors

Sale
ARCKVW

Sale - Arc'teryx Kyanite Vest for Women

5.0
2 reviews
Ratings Distribution

SKU: ARCKVW

Regular: $129.00

Sale , Starting at
$64.95

+ wishlist

  • Polartec Power Stretch Pro layering vest
  • Warm, durable, and versatile
  • 4-way stretch fabric
  • Trim, slim fit

In Stock Free Shipping

Available in 3 colors

Top Rated Gear
ARCRAZNW
Your Price
$145.00

+ wishlist

  • Moisture-wicking
  • Great warmth-to-weight ratio
  • Flatlock construction
  • Collar zipper

In Stock Free Shipping

Available in 4 colors

Your Price
$125.00

+ wishlist

  • Moisture-wicking
  • Breathable
  • Great warmth-to-weight ratio
  • Quick drying

In Stock Free Shipping

Your Price
$89.00

+ wishlist

  • Moisture wicking
  • Breathable, quick drying
  • Flatlock seams
  • Thigh pocket

In Stock Free Shipping

Sale
ARCLZNW

Regular: $125.00

Sale , Starting at
$64.95

+ wishlist

  • Moisture-wicking
  • Warm when wet
  • Resists odors
  • Flatlock seams

In Stock Free Shipping

Available in 2 colors

Sale
SMTZTM

SmartWool NTS Midweight 250 Zip T for Men

5.0
4 reviews
Ratings Distribution

SKU: SMTZTM

Regular: $105.00

Sale , Starting at
$62.95

+ wishlist

  • Midweight baselayer
  • 10 inch front zipper
  • Flatlock seams
  • Shoulder panels

In Stock Free Shipping

Available in 3 colors

Closeout
SMTM2W

Regular: $95.00

Closeout
$49.95

+ wishlist

  • Flatlock seams
  • Form fit, natural rise
  • Interlock knit
  • Covered elastic band

In Stock

Top Rated Gear
ARCKYJM

Arc'teryx Kyanite Jacket for Men

5.0
2 reviews
Ratings Distribution

SKU: ARCKYJM

Your Price
$159.00

+ wishlist

  • Polartec Power Stretch Pro layering jacket
  • Warm, durable, and versatile
  • 4-way stretch fabric
  • Trim, slim fit

In Stock Free Shipping

Available in 5 colors

Sale
SMTMZC4W

Regular: $110.00

Sale , Starting at
$59.95

+ wishlist

  • Slim Fit
  • Interlock knit
  • 8" (20 cm) center front zip
  • Back body seam wraps to front for body enhancing fit

In Stock Free Shipping

Available in 2 colors

Your Price
$80.00

+ wishlist

  • Slim Fit
  • Raglan sleeve design removes shoulder seams
  • Flatlock seam construction designed to eliminate chafing
  • Knit in Vietnam: 87% Merino Wool, 13% Nylon Core

In Stock Free Shipping

Your Price
$75.00

+ wishlist

  • Slim Fit; Mid Rise
  • Fully functional fly
  • Wide elastic waistband (40mm) designed for ultimate comfort; keeps Merino next to skin
  • Flatlock seam construction designed to eliminate chafing

In Stock Free Shipping

Sale
SMTMPSM

Regular: $75.00

Sale , Starting at
$49.95

+ wishlist

  • Slim Fit
  • Raglan sleeve design removes shoulder seams
  • Flatlock seam construction designed to eliminate chafing
  • Knit in Vietnam: 87% Merino Wool, 13% Nylon Core

In Stock Free Shipping

Sale
SMTMIW

Regular: $100.00

Sale , Starting at
$49.95

+ wishlist

  • Midweight baselayer
  • Body enhancing fit
  • Flatlock seams
  • Moisture wicking

In Stock

Available in 2 colors

Top Rated Gear
TRMMF3M

Terramar Military Fleece 3.0 Pant for Men

5.0
2 reviews
Ratings Distribution

SKU: TRMMF3M

List: $30.00

Your Price
$16.95

+ wishlist

  • Moisture wicking
  • Quick drying
  • Anti-bacterial
  • Breathable

In Stock

Available in 2 colors

Sale
TRMMMU

Regular: $55.00

Sale
$34.95

+ wishlist

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

In Stock

Sale
SMTMIM

SmartWool Merino 250 Baselayer Crew for Men

5.0
2 reviews
Ratings Distribution

SKU: SMTMIM

Regular: $100.00

Sale , Starting at
$59.95

+ wishlist

  • Midweight baselayer
  • Set-in sleeves
  • Flatlock seams
  • Form Fit

In Stock Free Shipping

Available in 2 colors

Sale
TRMWSP

Terramar Women's Pointelle Silk Pant

5.0
1 review
Ratings Distribution

SKU: TRMWSP

Regular: $31.95

Sale , Starting at
$25.95

+ wishlist

  • Material: 100% Filament Pointelle knit silk
  • Covered elastic waist
  • Rib cuffs with spandex
  • Qwik-Dri thermoregulation technology
  • Antimicrobial fabric

In Stock

Available in 2 colors

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