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 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
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Sale

Regular: $60.00 $25.05 (42%)

Your Price: $34.95
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Sale

Mammut Go Warm T-Shirt Baselayer for Women

SKU: MMTGWTW

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

Regular: $60.00 $32.05 (53%)

Your Price: $27.95
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Polarmax Maxride Crew for Women

SKU: PMXMRCW

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

Your Price: $17.95
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Sale

Regular: $55.00 $25.05 (46%)

Your Price: $29.95
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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
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Polarmax Maxride Pants for Men

1.0 (1 review)
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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: $17.95
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Sale

Mammut Go Warm Baselayer 3/4 Pants for Women

SKU: MMTGW3PW

  • Contoured cut
  • 100% polyester microfiber
  • Antimicrobial feature
  • Merino wool and polyester blend

Regular: $49.00 $19.05 (39%)

Your Price: $29.95
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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
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In Stock + Wish list

Sale

Polarmax Maxride Pants for Women

2.0 (1 review)
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SKU: PMXMRPW

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

Regular: $17.95 $3.00 (17%)

Starting at: $14.95
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Top Rated Gear

Polarmax Comp-4 Tech Fleece Crew for Men

5.0 (1 review)
Ratings Distribution
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SKU: PMXC4TCM

  • 4-way power stretch fabric
  • Brushed fleece interior
  • Acclimate dry moisture wicking
  • Athletic fit

Your Price: $38.95
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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
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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
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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
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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
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Sale

Regular: $60.00 $25.05 (42%)

Your Price: $34.95
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Sale

Polarmax Micro H2 Base Layer Zip Mock for Women

SKU: PMXMHZW

  • Flat seams
  • Antimicrobial
  • Quick dry
  • Front zipper

Regular: $32.95 $8.00 (24%)

Your Price: $24.95
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Polarmax 4-Way Stretch Zip Mock for Men

4.0 (1 review)
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SKU: PMXSSZMM

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

Your Price: $34.95
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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
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Sale

Polarmax Micro H2 Base Layer Unfitted Hoodie

SKU: PMXMHUH

  • Relaxed Fit
  • Flat Seams
  • Antimicrobial
  • Moisture Wicking
  • Unisex design

Regular: $34.95 $10.00 (29%)

Your Price: $24.95
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