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 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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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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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
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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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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

Regular: $55.00 $25.05 (46%)

Your Price: $29.95
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Icebreaker Lightweight Oasis Leggings for Men

SKU: ICBLOLM

  • Odor resistant
  • Breathable
  • Lightweight
  • Merino wool
  • Lightweight

Your Price: $89.99
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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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Icebreaker Midweight Tech Top Long Sleeve Crewe for Men

SKU: ICBMTLCM

  • Odor resistant
  • Breathable
  • Merino wool
  • Offset shoulders
  • Midweight

List: $109.99 $10.00 (9%)

Starting at: $99.99
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Sale

Mammut Go Dry Shortsleeve Baselayer T-Shirt for Women

SKU: MMTGDSSW

  • Light, stretch material with waffle backing
  • Contoured cut
  • Quick drying
  • Antimicrobial feature
  • Ultraviolet Protection Factor (UPF) 20+

Regular: $39.00 $16.05 (41%)

Starting at: $22.95
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Icebreaker Oasis Long Sleeve Lightweight Crewe for Women

SKU: ICBOLLCW

  • Odor resistant
  • Breathable
  • Merino wool
  • Offset shoulders
  • Lightweight

Your Price: $89.99
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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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Icebreaker Tech Top Long Sleeve Midweight Crewe for Women

SKU: ICBTLMCW

  • Odor resistant
  • Breathable
  • Merino wool
  • Offset shoulders
  • Midweight

List: $109.99 $10.00 (9%)

Starting at: $99.99
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Sale

Regular: $60.00 $25.05 (42%)

Your Price: $34.95
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Icebreaker Midweight Vertex Leggings for Women

SKU: ICBMVLW

  • Odor resistant
  • Breathable
  • Gusseted
  • Merino wool
  • Midweight

Your Price: $99.99
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Icebreaker Lightweight Oasis Long Sleeve Crewe for Men

SKU: ICBLOLCM

  • Odor resistant
  • Breathable
  • Lightweight
  • Merino wool
  • Lightweight

Your Price: $89.99
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Sale

Mammut Go Warm Baselayer Pants for Women

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SKU: MMTGWPW

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

Regular: $54.00 $24.05 (45%)

Your Price: $29.95
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Icebreaker Everyday Leggings for Women

SKU: ICBEVLW

  • Gusset
  • Flat-lock stitching
  • Icebreaker branded waistband
  • Icebreaker pip label
  • Material: Merino wool

Your Price: $59.99
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