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 Kobuk Expedition Weight 1/4 Zip Top for Men

SKU: MINEQM

  • Mock neck
  • Zip for venting
  • Merino wool
  • Interlock construction

List: $110.99 $16.50 (15%)

Your Price: $94.49
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Minus33 Kenai Expedition Weight Bottoms for Women

SKU: MINEBW

  • Merino wool
  • Interlock construction
  • Flat lock seams
  • Machine washable

List: $95.99 $14.00 (15%)

Your Price: $81.99
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Minus33 Osceola Midweight 3/4 Bottoms for Women

SKU: MINMQW

  • Merino wool
  • Interlock construction
  • Flat lock seams
  • Machine washable

List: $59.99 $9.00 (15%)

Your Price: $50.99
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Minus33 Yukon Expedition Weight Crew Neck for Men

SKU: MINECM

  • Merino wool
  • Interlock construction
  • Flat lock seams
  • Machine washable

List: $95.99 $24.00 (25%)

Your Price: $71.99
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Top Rated Gear

List: $89.99 $13.50 (15%)

Your Price: $76.49
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Minus33 Tanana Expedition Weight Crew Neck for Women

SKU: MINECW

  • Merino wool
  • Interlock construction
  • Flat lock seams
  • Machine washable

List: $95.99 $24.00 (25%)

Your Price: $71.99
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Minus33 Merino Wool MidWeight Crew Neck - Men's

Mossy Oak Infinity

SKU: MINMCMMO

  • Merino wool
  • Interlock knit construction
  • Flat lock seams
  • Machine wash, dry

List: $80.99 $12.00 (15%)

Your Price: $68.99
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Minus33 Allagash Lightweight 1/4 Length Zip for Men

SKU: MINLZM

  • Merino wool
  • Jersey knit construction
  • Flat lock seams
  • Machine washable

List: $64.99 $9.50 (15%)

Your Price: $55.49
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Minus33 Kinsman MidWeight Turtleneck for Men

SKU: MINMTM

  • Merino wool
  • Interlock construction
  • Flat lock seams
  • Machine washable

List: $75.99 $11.00 (14%)

Your Price: $64.99
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Minus33 Merino Wool Lightweight Bottoms for Men

SKU: MINLBM

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

List: $59.99 $9.00 (15%)

Your Price: $50.99
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Minus33 Denali Expedition Weight Full Zip Top for Men

SKU: MINEFM

  • Merino wool
  • Interlock construction
  • Flat lock seams
  • Rib knit cuffs

List: $119.99 $18.00 (15%)

Your Price: $101.99
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List: $70.49 $10.50 (15%)

Your Price: $59.99
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List: $75.99 $11.00 (14%)

Your Price: $64.99
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Minus33 Merino Wool Midweight Crew Top for Boys

SKU: MINMCB

  • 100 percent merino wool
  • Moisture wicking
  • Odor repellent
  • UPF 50

List: $45.99 $6.50 (14%)

Your Price: $39.49
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List: $65.99 $9.50 (14%)

Your Price: $56.49
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Minus33 Merino Wool Midweight Bottoms for Boys

SKU: MINMBB

  • 100 percent merino wool
  • Moisture wicking
  • Odor repellent
  • UPF 50

List: $45.99 $6.50 (14%)

Your Price: $39.49
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Minus33 Merino Wool Mid Weight Bottoms for Men

SKU: MINMWBM

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

List: $65.99 $9.50 (14%)

Your Price: $56.49
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Minus33 Merino Wool Lightweight Bottoms for Women

SKU: MINLBW

  • 100% 17.5-micron Merino wool
  • 170 g/m2 jersey-knit construction
  • Flat-lock seams
  • Weight (size L): 6.1 oz. 
  • Machine-wash compatibility

List: $59.99 $9.00 (15%)

Your Price: $50.99
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Minus33 Katmai Expedition Weight Bottoms for Men

SKU: MINEBM

  • Merino wool
  • Interlock construction
  • Flat lock seams
  • Machine washable

List: $95.99 $14.00 (15%)

Your Price: $81.99
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Minus33 Tecumseh Midweight 3/4 Bottoms for Men

SKU: MINMQM

  • Merino wool
  • Interlock construction
  • Flat lock seams
  • Machine washable

List: $59.99 $9.00 (15%)

Your Price: $50.99
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