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.

Adidas Ultimate 3/4 Tight for Women

SKU: ADSUT34T

  • Wide elastic waistband
  • Climalite fabric
  • Fitted fit
  • Adidas logo on hip

Your Price: $38.00
Select Options

In Stock + Wish list

Under Armour Amplify Thermal Crew for Men

SKU: UNAATM

  • Waffle textured
  • 4 way stretch
  • Moisture transport
  • Anti odor technology

List: $39.99 $12.04 (30%)

Your Price: $27.95
Select Options

In Stock + Wish list

List: $39.99 $12.04 (30%)

Your Price: $27.95
Select Options

In Stock + Wish list

Polarmax 4-Way Stretch Tights for Women

SKU: PMXSSTW

  • 4-Way stretch XG fabric
  • Quick drying
  • Scent prevent anti-microbial
  • Comfortable flat seams
  • Athletic fit

Your Price: $32.95
Select Options

In Stock + Wish list

Sale

Polarmax Comp-4 Tech Fleece Zip Mock for Women

SKU: PMXC4TMW

  • 4-way power stretch fabric
  • Tech face
  • Brushed fleece interior
  • No shrink
  • Athletic Fit

Regular: $42.95 $9.00 (21%)

Starting at: $33.95
Select Options

In Stock + Wish list

Polarmax 4-Way Stretch Zip Mock for Men

4.0
(1 review)
Ratings Distribution
  • 5 Stars
     
    (0)
  • 4 Stars
     
    (1)
  • 3 Stars
     
    (0)
  • 2 Stars
     
    (0)
  • 1 Stars
     
    (0)

SKU: PMXSSZMM

  • 4-Way stretch XG fabric
  • Quick drying
  • Scent prevent anti-microbial
  • Comfortable flat seams
  • Athletic fit

Your Price: $34.95
Select Options

In Stock + Wish list

Sale

Adidas Terrex Icesky 1/2 Zip Long Sleeve for Women

SKU: ADSTIZLW

  • Climawarm Technology
  • FORMOTION Technology
  • 1/2-Zip 
  • Fitted Collar

Regular: $65.00 $33.05 (51%)

Your Price: $31.95
Select Options

In Stock + Wish list

Sale

Mammut Go Warm Longsleeve Baselayer for Women

SKU: MMTGWLW

  • Contoured cut
  • Extended back
  • 100% Polyester microfiber
  • Merino wool and polyester mix
  • Antimicrobial feature

Regular: $69.00 $34.05 (49%)

Your Price: $34.95
Select Options

In Stock + Wish list

Sale

Mammut 3/4 Pants Warm-Quality Thermal Underwear for Men

SKU: MMT3PWQM

  • Top high-end functionality
  • Youthful design
  • Fast drying
  • Antimicrobial
  • Specially developed fabrics 

Regular: $70.00 $38.05 (54%)

Your Price: $31.95
Select Options

In Stock + Wish list

Sale

Regular: $42.95 $8.00 (19%)

Your Price: $34.95
Select Options

In Stock + Wish list

Polarmax 4-Way Stretch Zip Mock for Women

SKU: PMXSSZMW

  • 4-Way stretch XG fabric
  • Quick drying
  • Scent prevent anti-microbial
  • Comfortable flat seams
  • Athletic fit

Your Price: $34.95
Select Options

In Stock + Wish list

Sale

Regular: $60.00 $25.05 (42%)

Your Price: $34.95
Select Options

In Stock + Wish list

Marmot ThermalClime Sport Tight for Men

SKU: MRMTSTM

  • Flat locked seams
  • Gusseted crotch
  • Moisture wicking
  • Quick drying

Your Price: $38.00
Select Options

In Stock + Wish list

Minus33 Merino Wool Midweight Crew Top for Boys

SKU: MINMCB

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

List: $45.99 $6.50 (14%)

Your Price: $39.49
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

Polarmax Powerskins by XGO Tight for Men

SKU: PMXPSTM

  • Anti microbial
  • Won't shrink, pick, fade
  • Durable, breathable
  • Four way stretch

Your Price: $35.95
Select Options

In Stock + Wish list