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 Yukon Expedition Weight Crew Neck for Men

SKU: MINECM

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

List: $95.99 $14.00 (15%)

Your Price: $81.99
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Under Armour Amplify Thermal Crew for Men

SKU: UNAATM

  • Waffle textured
  • 4 way stretch
  • Moisture transport
  • Anti odor technology

List: $39.99 $12.04 (30%)

Your Price: $27.95
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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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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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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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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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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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Polarmax Maxride Crew for Men

SKU: PMXMRCM

  • Layering piece or wear alone
  • Contrast stitch
  • Machine wash & dry, no shrinking
  • Lightweight rib knit 
  • Anti-microbial and scent prevent

Your Price: $17.95
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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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Sale

Terramar Men's Helix Short-Sleeve Polyester Crew T-Shirt

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SKU: TRMMHS

  • ec2 Qwik-Dri Thermoregulation Comfort Technology
  • Anti-Microbial Fabric
  • Air pockets for Improved Insulation
  • Soft, Breathable and Fast-Drying
  • UPF Rating 25+

Regular: $11.95 $3.00 (25%)

Starting at: $8.95
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Sale

Regular: $85.00 $40.05 (47%) Exp.

Starting at: $44.95
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Under Armour Coldgear Infrared Evo Cg Mock for Men

SKU: UNACIECM

  • Dual-layer fabric 
  • Thermo-conductive inner coating 
  • 4-Way Stretch fabrication 
  • Moisture transport system 
  • Quick-dry fabrication 

List: $54.99 $17.04 (31%)

Your Price: $37.95
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Marmot ThermalClime Sport LS Crew Shirt for Men

SKU: MRMTLSCM

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

Regular: $42.00 $17.05 (41%)

Your Price: $24.95
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Marmot ThermalClime Pro Boot Long Sleeve Crew for Men

SKU: MRMTPLCM

  • Flat locked seams
  • Recycled polyester
  • Polartec technology
  • Moisture wicking

Regular: $50.00 $17.05 (34%)

Your Price: $32.95
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Sale

Regular: $42.95 $8.00 (19%)

Your Price: $34.95
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Sale

The North Face Warm Longsleeve Zip Neck for Men

SKU: NFCWLZMN

  • Hollow core
  • Lightweight wicking
  • Quick drying
  • Stain resistant
  • Hollow core fibers

Regular: $60.00 $30.05 (50%)

Your Price: $29.95
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Rab MeCo 165 Long Sleeve Zip Tee for Men

SKU: RABM6LTM

  • Merino fabric
  • Chest zipper
  • Stand up collar
  • Flatlock seams

Your Price: $100.00
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Sale

Regular: $85.99 $26.00 (30%)

Your Price: $59.99
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Sale

SmartWool Midweight Zip T for Men

SKU: SMTMZM

  • 100% Merino Wool
  • Form fit
  • 10 in. center front zip
  • Flatlock seam construction eliminates chafing
  • Shoulder panels

Regular: $85.99 $30.00 (35%)

Starting at: $55.99
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Sale

Regular: $80.00 $27.05 (34%)

Starting at: $52.95
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