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.

List: $119.00 $9.05 (8%)

Your Price: $109.95
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SmartWool NTS Midweight 250 Pattern Crew for Women

SKU: SMTRPW

  • Body enhancing fit
  • Flatlock seams
  • Offset shoulder panels
  • Interlock knit

Your Price: $105.00
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ColdPruf Extreme Performance Crew for Women

SKU: CLDXCW

  • Two-layer engineering
  • Odor resistance
  • Moisture wicking
  • Hemmed cuffs

Your Price: $30.99
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Ibex Woolies 1 Crew Stripe for Men

SKU: IBX15M

  • Breathable
  • Anti-odor
  • Raglan sleeves
  • Flatlock seams

Your Price: $85.00
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The North Face Light Boot Top Bottom for Men

SKU: NFCLBTBM2XBK

  • Elastic logo waist
  • Flat-locked seams
  • Fly opening
  • Three-quarter length
  • Moisture-wicking polyester knit fabric

Regular: $45.00 $25.05 (56%)

Your Price: $19.95

In Stock + Wish list

Ibex Woolies 3 Hoody for Men

SKU: IBX3HM

  • Breathable
  • Anti-odor
  • Thumb holes in sleeves
  • Flatlock seams

List: $155.00 $46.05 (30%)

Your Price: $108.95
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Mammut Go Dry Boxer for Men

SKU: MMTGDBM

  • Contoured cut
  • Freedom of movement
  • Youthful design
  • Fast drying
  • Antimicrobial

Your Price: $35.00
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Regular: $94.95 $34.96 (37%)

Starting at: $59.99
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Under Armour UA Essential Solid Compression Shorts Men

SKU: UNAESCSM

  • Hydro armour technology
  • ISO chill cooling technology
  • Quick dry waistband
  • Armour block

Regular: $39.99 $15.04 (38%)

Your Price: $24.95
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ColdPruf Authentic 93 Crew for Men

SKU: CLDACM

  • Two layer engineering
  • Natural warmth barrier
  • Tagless
  • Flat seams

Regular: $20.99 $2.00 (10%)

Starting at: $18.99
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Ibex Woolies 1 Bottoms for Men

SKU: IBX1BM

  • Breathable
  • Anti-odor
  • Wide waistband
  • Flatlock seams

Your Price: $80.00
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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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Ibex Woolies 3 Hoody for Women

SKU: IBX3HW

  • Breathable
  • Anti-odor
  • Thumb holes in sleeves
  • Flatlock seams

Regular: $108.95 $9.00 (8%)

Your Price: $99.95
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List: $55.00 $20.05 (36%)

Your Price: $34.95
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SmartWool NTS Midweight 250 Bottom for Women

SKU: SMTM2W

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

Your Price: $95.00
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Regular: $49.99 $15.04 (30%)

Your Price: $34.95
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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: $45.00 $20.05 (45%)

Starting at: $24.95
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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%)

Starting at: $27.95
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