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

Outdoor Research Echo Tee Shirt for Men

SKU: ORSETMN

  • Internal Front-Zip Stormflap
  • Adjustable Wire-Brimmed Hood
  • DWR Coated Zippers
  • Welded Construction
  • UPF 15

Regular: $39.00 $19.05 (49%)

Your Price: $19.95
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Under Armour Base 2.0 Crew for Men

SKU: UNAB2CM

  • Mid-weight protection
  • Soft, brushed interior
  • 4-way stretch fabrication
  • Moisture transport system

List: $54.99 $16.04 (29%)

Starting at: $38.95
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SmartWool NTS Micro 150 Crew for Men

SKU: SMTCRM

  • Form fitting Jersey knit
  • Crew neck, set-in sleeves
  • Shoulder panels
  • Flatlock seam construction

List: $74.95 $17.96 (24%)

Starting at: $56.99
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List: $54.99 $16.04 (29%)

Your Price: $38.95
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Sale

Mountain Hardwear Tephra Trek T-Shirt Short Sleeve for Women

SKU: MHWTTSTW

  • Wick Q EVAP
  • Fast drying
  • Stretch fabric
  • Seams rotated away from pressure points
  • Antimicrobial finish

Regular: $55.00 $32.05 (58%)

Your Price: $22.95
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Sale

Outdoor Research Frescoe Henley for Women

SKU: ORSFRHW

  • Dri-release E.C.O. fabric
  • Lightweight and Button front
  • Built-in FreshGuard odor neutralization
  • Button front

Regular: $48.00 $28.05 (58%)

Your Price: $19.95
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Marmot ThermalClime Sport SS Crew Shirt for Men

SKU: MRMTSSCM

  • Quick drying
  • Moisture wicking
  • Stretch elastane
  • Flat lock seams

Your Price: $35.00
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SmartWool NTS Micro 150 Crew for Women

SKU: SMTCRW

  • Form fitting Jersey knit
  • Stretch stitching
  • Side seams wrap to front
  • Tagless comfort

List: $74.95 $17.96 (24%)

Your Price: $56.99
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Sale

ColdPruf Performance 98 Crew for Men

SKU: CLDPRCM

  • Single layer engineering
  • Max dryness, antimicrobial
  • Moisture management
  • Polyester, spandex

Regular: $18.99 $2.00 (11%)

Your Price: $16.99
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Sale

Polarmax Powerskins By XGO Long Sleeve Crew Shirt for Men

SKU: PMXPSLCM

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

Regular: $27.95 $1.00 (4%)

Your Price: $26.95
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Terramar Thermasilk Filament Jersey Silk Crew Shirt for Men

SKU: TRMMSC

  • 100% Supersoft Pure Filament Jersey Silk
  • ec2 Qwik-Dri Thermoregulation Comfort Technology
  • Lightweight
  • Durable
  • Fabric Weight: 75 grams (2.6 oz.)

Your Price: $27.95
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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
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Sale

Marmot ThermalClime Sport SS Crew for Women

SKU: MRMTSSCW

  • Quick drying
  • Moisture wicking
  • Water resistant elastane
  • Flat lock seams

Regular: $35.00 $12.05 (34%)

Your Price: $22.95
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Sale

Regular: $27.95 $11.00 (39%)

Starting at: $16.95
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Ibex Woolies 220 Crew Stripe for Women

SKU: IBXW2CSW

  • Rib knit merino
  • Form fit
  • Flatlock seams
  • Raglan sleeves

Your Price: $110.00
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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

ColdPruf Performance 58 Crew for Women

SKU: CLDPRCW

  • Single layer engineering
  • Max dryness, antimicrobial
  • Moisture management
  • Polyester, spandex

Regular: $18.99 $2.00 (11%)

Starting at: $16.99
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Top Rated Gear

List: $75.99 $11.00 (14%)

Your Price: $64.99
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