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.

Mammut Go Dry Zip Baselayer Longsleeve Shirt for Men

SKU: MMTGDZLSM

  • Lightweight, fast-drying
  • Anti-microbial
  • Contoured cut
  • Stretch material

Your Price: $70.00
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Minus33 Ticonderoga Men's Lightweight Crew

SKU: MINLCM

  • 100% 17.5-Micron-Merino wool
  • 170 g/m2 Jersey-knit construction
  • Flat-lock seams
  • Machine-washable
  • Sizes available: X-small to XXX-large

List: $59.99 $9.00 (15%)

Your Price: $50.99
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Sale

Regular: $34.95 $5.00 (14%)

Starting at: $29.95
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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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Mammut Long Pants Warm-Quality Thermal Underwear for Men

SKU: MMTLPWQM

  • Fast drying
  • Antimicrobial feature
  • Material: 83% Polyester, 17% Wool
  • Body zone fabric design

Regular: $80.00 $45.05 (56%)

Your Price: $34.95
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Ibex Woolies 3 Pullover for Men

SKU: IBX3PM

  • Breathable
  • Anti-odor
  • Raglan sleeves
  • Brushed exterior

Regular: $115.00 $40.05 (35%)

Your Price: $74.95
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Terramar Women's Thermawool CS 4.0 Half-Zip

SKU: TRMWTW4H

  • Climasense fabric
  • Advanced odor control
  • Wicking, fast drying
  • Retains heat, breathable

Your Price: $41.95
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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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Regular: $38.95 $4.00 (10%)

Starting at: $34.95
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Marmot ThermalClime Sport Tight for Men

SKU: MRMTSTM

  • Flat locked seams
  • Gusseted crotch
  • Moisture wicking
  • Quick drying

Your Price: $38.00
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ColdPruf Authentic Union Suit for Men

SKU: CLDAUM

  • Two-layer engineering
  • Vertical rear flap
  • Natural warmth barrier
  • ThermaChoice System

Your Price: $42.99
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Top Rated Gear

List: $75.99 $11.00 (14%)

Your Price: $64.99
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Mammut Go Warm Longsleeve Shirt Baselayer for Men

SKU: MMTGWSM

  • Extended back
  • Contoured cut
  • Body Mapping technology
  • Polyester microfiber
  • Antimicrobial feature

Regular: $49.95 $5.00 (10%)

Starting at: $44.95
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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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Ibex Woolies 2 Crew Stripe for Men

SKU: IBXCSM

  • Breathable
  • Anti-odor
  • Set-in sleeves
  • Flatlock seams

List: $110.00 $33.05 (30%)

Your Price: $76.95
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ColdPruf Authentic Wool Plus 92 Crew for Men

SKU: CLDAWCM

  • Ring spun cotton, Merino wool, nylon
  • Combed, ring spun cotton
  • Inner layer body heat
  • Rib knit cuffs

Regular: $22.99 $3.00 (13%)

Starting at: $19.99
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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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ColdPruf Classic 170 Silk Weight Merino Wool Pants for Men

SKU: CLDCPM

  • Merino wool
  • 5 ounce silk weight
  • Single layer jersey knit
  • Tagless, flat seams

Regular: $46.99 $7.00 (15%)

Starting at: $39.99
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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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