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.

Minus33 Moriah Women's Lightweight Crew

SKU: MINLCW

  • Jersey knit construction
  • 100% Merino Wool
  • Lightweight base layer
  • Flat lock seams
  • Machine dry

List: $59.99 $9.00 (15%)

Your Price: $50.99
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List: $65.99 $9.50 (14%)

Your Price: $56.49
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Top Rated Gear

List: $75.99 $11.00 (14%)

Your Price: $64.99
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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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SmartWool Midweight Pattern Crew Top for Men

SKU: SMTMPCM

  • 100% Merino Wool
  • Form Fitted
  • Interlock Knit
  • Shoulder Panels
  • Flatlock Seams

Regular: $90.99 $25.00 (27%)

Your Price: $65.99
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Minus33 Merino Wool Mid Weight 1/4 Length Zip for Women

SKU: MINMWQZW

  • 100% 18.5 Micron Merino Wool
  • 230 g/m2 interlock knit construction
  • Flat lock seams

List: $75.99 $11.00 (14%)

Your Price: $64.99
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SmartWool PhD Wind Zip T for Men

SKU: SMTWZM

  • PhD performance
  • Windproof front panel
  • Zipper with chin guard
  • Moisture wicking

Your Price: $119.99
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Ibex Woolies 1 Crew for Women

SKU: IBXW1W

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

Regular: $80.00 $30.05 (38%)

Starting at: $49.95
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SmartWool NTS Micro 150 Pattern Crew for Men

SKU: SMTMPM

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

Your Price: $79.95
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SmartWool NTS Midweight 250 Zip T for Men

SKU: SMTZTM

  • Midweight baselayer
  • 10 inch front zipper
  • Flatlock seams
  • Shoulder panels

Your Price: $99.99
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Marmot Windridge Short Sleeve Shirt for Men

SKU: MRMWSSM

  • Ultraviolet protection factor (UPF) 50
  • Knit, polyester fabric
  • Tag-free neckline
  • Flat-locked seams
  • Mesh panels

Regular: $30.00 $10.05 (34%)

Starting at: $19.95
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SmartWool NTS Midweight 250 Pattern Crew for Men

SKU: SMTPMM

  • Set-in sleeves
  • Flatlock seams
  • Form Fit
  • Interlock knit

Your Price: $105.00
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Icebreaker Midweight Tech Top Long Sleeve Crewe for Men

SKU: ICBMTLCM

  • Anti chafe seams
  • Odor resistant
  • Breathable
  • Merino wool
  • Offset shoulders

List: $109.99 $10.00 (9%)

Starting at: $99.99
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Your Price: $41.95
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Icebreaker Oasis Long Sleeve Lightweight Crewe for Women

SKU: ICBOLLCW

  • Anti chafe seams
  • Odor resistant
  • Breathable
  • Merino wool
  • Offset shoulders

Your Price: $89.99
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Icebreaker Lightweight Oasis Long Sleeve Crewe for Men

SKU: ICBLOLCM

  • Anti chafe seams
  • Odor resistant
  • Breathable
  • Lightweight
  • Merino wool

List: $89.99 $22.00 (24%)

Starting at: $67.99
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Top Rated Gear

List: $89.99 $13.50 (15%)

Your Price: $76.49
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Marmot ThermalClime Pro LS 1/2-Zip for Men

SKU: MRMTP2ZM

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

Your Price: $60.00
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