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

Mammut Go Warm Longsleeve Zip Baselayer for Men

SKU: MMTGWZM

  • Contoured cut
  • Extended back
  • Zip with zip-store
  • 100% polyester microfiber
  • Merino wool and polyester mix

Regular: $77.00 $32.05 (42%)

Your Price: $44.95
Select Options

In Stock + Wish list

Sale

Mammut Go Warm Longsleeve Zip Baselayer for Women

SKU: MMTGWZW

  • Contoured cut
  • The extended back 
  • Zip with zip-store 
  • 100% polyester microfiber 
  • Merino wool and polyester mix 

Regular: $77.00 $32.05 (42%)

Your Price: $44.95
Select Options

In Stock + Wish list

Terramar Cloud Nine CS Half-Zip 2.0 for Women

SKU: TRMCNH2W

  • Stretch jersey
  • Moisture wicking
  • Fast drying
  • Breathable

Your Price: $19.95
Select Options

In Stock + Wish list

Sale

Regular: $60.00 $25.05 (42%)

Your Price: $34.95
Select Options

In Stock + Wish list

Terramar Cloud Nine CS Scoop 2.0 Shirt for Women

SKU: TRMCNS2W

  • Stretch jersey
  • Moisture wicking
  • Fast drying
  • Breathable

Your Price: $17.95
Select Options

In Stock + Wish list

Sale

Terramar Women's Thermawool 100% Merino Wool V-Neck Shirt

SKU: TRMWTWV

  • Superfine Merino Wool
  • Soft
  • Breathable
  • Moisture Management
  • Anti-microbial

Regular: $35.95 $8.00 (22%)

Your Price: $27.95
Select Options

In Stock + Wish list

Sale

Mammut Go Warm Baselayer Pants for Women

3.0 (1 review)
Ratings Distribution
  • 5 Stars
     
    (0)
  • 4 Stars
     
    (0)
  • 3 Stars
     
    (1)
  • 2 Stars
     
    (0)
  • 1 Stars
     
    (0)

SKU: MMTGWPW

  • Contoured cut
  • Merino wool and polyester microfiber
  • Antimicrobial feature
  • Body Mapping technology

Regular: $54.00 $24.05 (45%)

Your Price: $29.95
Select Options

In Stock + Wish list

Terramar Cloud Nine CS Tight 2.0 for Women

SKU: TRMCNT2W

  • Thermolator II fabric
  • EC2 Qwik-Dri technology
  • Anti microbial
  • UPF 25 sun protection

Your Price: $17.95
Select Options

In Stock + Wish list

Terramar Men's Thermawool CS 4.0 Half-Zip

SKU: TRMMTW4H

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

Your Price: $35.95
Select Options

In Stock + Wish list

Terramar Kashmir HG V-Neck 1.0 for Women

SKU: TRMKHV1W

  • HG Climasense heat generating technology
  • Soft, breathable, and fast-drying
  • Antimicrobial finish
  • Brushed surface
  • UPF rating 25+

Your Price: $16.95
Select Options

In Stock + Wish list

Sale

Mammut Go Warm Longsleeve Shirt Baselayer for Men

SKU: MMTGWSM

  • Extended back
  • Contoured cut
  • Body Mapping technology
  • Polyester microfiber 
  • Antimicrobial feature

Regular: $75.00 $30.05 (40%)

Your Price: $44.95
Select Options

In Stock + Wish list

Terramar Ecolator CS Fleece Half-Zip 3.0 for Women

SKU: TRMECH3W

  • Comfort in all seasons
  • Antimicrobial
  • Heavyweight
  • Breathable

Your Price: $28.95
Select Options

In Stock + Wish list

Terramar Men's Thermawool CS 4.0 Pants

SKU: TRMMTW4P

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

Your Price: $28.95
Select Options

In Stock + Wish list

Sale

Terramar Men's Helix Long-Sleeve Poly Crew Shirt

5.0 (2 reviews)
Ratings Distribution
  • 5 Stars
     
    (2)
  • 4 Stars
     
    (0)
  • 3 Stars
     
    (0)
  • 2 Stars
     
    (0)
  • 1 Stars
     
    (0)

SKU: TRMMHC

  • Lightweight Temperature-Control Layer
  • Highly Breathable and Fast-Drying
  • Non-Sticky
  • 100% Micro Denier Polyester
  • Anti-microbial

Regular: $12.95 $3.00 (23%)

Your Price: $9.95
Select Options

In Stock + Wish list

Sale

Regular: $60.00 $25.05 (42%)

Your Price: $34.95
Select Options

In Stock + Wish list

Sale

Terramar Men's Thermolator II Pants

5.0 (1 review)
Ratings Distribution
  • 5 Stars
     
    (1)
  • 4 Stars
     
    (0)
  • 3 Stars
     
    (0)
  • 2 Stars
     
    (0)
  • 1 Stars
     
    (0)

SKU: TRMMT2P

  • 86% Micro-Polyester and 14% Spandex
  • ec2 Qwik-Dri Thermoregulation Comfort Technology
  • Two Fabric Jersey and Mesh Construction
  • Anti-microbial
  • Fabric Weight: 180 grams (5.36 oz.)

Regular: $17.95 $3.00 (17%)

Starting at: $14.95
Select Options

In Stock + Wish list

Sale

Mammut Long Pants Warm-Quality Thermal Underwear for Men

SKU: MMTLPWQM

  • Fast drying
  • Antimicrobial feature
  • Material: 83% Polyester, 17% Wool
  • Body zone fabric design

Regular: $80.00 $45.05 (56%)

Your Price: $34.95
Select Options

In Stock + Wish list

Terramar Ecolator CS Fleece Scoop 3.0 for Women

SKU: TRMECS3W

  • Comfort in all seasons
  • Antimicrobial
  • Heavyweight
  • Breathable

Your Price: $25.95
Select Options

In Stock + Wish list

Sale

Regular: $42.95 $8.00 (19%)

Your Price: $34.95
Select Options

In Stock + Wish list