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.

Top Rated Gear

Terramar Thermasilk Filament Silk Pant for Men

5.0 (1 review)
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SKU: TRMMSP

  • ec2 Qwik-Dri Thermoregulation Comfort Technology
  • 100% Silk
  • Non-bulky
  • Anti-Microbial
  • Luxurious, Soft and Comfortable

Your Price: $27.95
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Top Rated Gear

Terramar Men's Thermolator II Pants

5.0 (1 review)
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SKU: TRMMT2P

  • 86% Micro-Polyester and 14% Spandex
  • ec2 Qwik-Dri Thermoregulation Comfort Technology
  • Two Fabric Jersey and Mesh Construction
  • Anti-microbial
  • Fabric Weight: 180 grams (5.36 oz.)

List: $17.95 $1.00 (6%)

Starting at: $16.95
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Top Rated Gear

ColdPruf Platinum Bottom for Men

5.0 (1 review)
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SKU: CLDPBM

  • CPT fiber technology
  • Two-layer engineering
  • Air-trap design
  • 100% CPT polyester inside
  • 70% polyester, 30% merino wool outside

List: $25.95 $5.96 (23%)

Your Price: $19.99
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Polarmax Double Base Layer Pants for Women

4.0 (1 review)
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SKU: PMXDBLPW

  • Quick drying
  • Scent prevent anti-microbial
  • Comfortable flat seams
  • Relaxed fit
  • Feels like cotton

Your Price: $20.95
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List: $65.99 $9.50 (14%)

Your Price: $56.49
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Terramar Women's Thermawool 100% Merino Wool Pants

3.0 (3 reviews)
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SKU: TRMWTWP

  • 100% Mercerized Super Soft Merino Wool Jersey
  • Machine-Washable
  • Itch-free
  • Breathable
  • Flatlock Seam Construction

Your Price: $35.95
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Mammut Go Warm Baselayer Pants for Women

3.0 (1 review)
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SKU: MMTGWPW

  • Contoured cut
  • Merino wool and polyester microfiber
  • Antimicrobial feature
  • Body Mapping technology

Regular: $54.00 $24.05 (45%)

Your Price: $29.95
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Polarmax Maxride Pants for Women

2.0 (1 review)
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SKU: PMXMRPW

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

Regular: $17.95 $3.00 (17%)

Starting at: $14.95
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Polarmax Maxride Pants for Men

1.0 (1 review)
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SKU: PMXMRPM

  • 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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ColdPruf Authentic Wool Plus 92 Pants for Men

SKU: CLDAWPM

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

Regular: $22.99 $2.00 (9%)

Starting at: $20.99
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ColdPruf Classic 170 Silk Weight Merino Wool Pants for Women

SKU: CLDCPW

  • Single layer jersey knit
  • Silk weight
  • Merino wool
  • Tagless, flat seams

Regular: $45.99 $5.00 (11%)

Starting at: $40.99
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Polarmax Comp-4 Tech Fleece Tights for Men

SKU: PMXC4TTM

  • 4-way power stretch fabric
  • Tech face
  • Brushed fleece interior
  • No shrink
  • Athletic Fit

Your Price: $38.95
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ColdPruf Basic 60S Top and Bottom Base Layer Set for Kids

SKU: CLDBK

  • Two layer engineering
  • Natural warmth barrier
  • Tagless
  • Flat seams

Your Price: $22.99
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Marmot ThermalClime Pro Tight for Men

SKU: MRMTPTM

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

Your Price: $45.00
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ColdPruf Extreme Performance Bottom for Men

SKU: CLDEPBM

  • CPT fiber technology
  • Two-layer engineering
  • Dryness and odor control
  • Moisture management 
  • Warmth barrier

Your Price: $30.99
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Polarmax Comp-4 Tech Fleece Tights for Women

SKU: PMXC4TTW

  • 4-way power stretch fabric
  • Tech face
  • Brushed fleece interior
  • Anti-microbial / anti-odor protection
  • Flat seam construction

Your Price: $38.95
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ColdPruf Basic 90 Pants for Men

SKU: CLDBPM

  • Two layer engineering
  • Natural warmth barrier
  • Tagless
  • Flat seams

Regular: $11.99 $1.00 (8%)

Starting at: $10.99
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Marmot ThermalClime Pro Boot Tight for Men

SKU: MRMTPBTM

  • Flat locked seams
  • Gusseted crotch
  • Recycled polyester
  • Polartec technology

Your Price: $42.00
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Marmot ThermalClime Pro Tight for Women

SKU: MRMTPTW

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

Your Price: $45.00
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Marmot Trail Breeze 3/4 Tight for Women X-Small Dark Steel

SKU: MRMB3TW

  • Polygiene technology finish
  • Ultraviolet protection factor 30
  • Mesh paneling
  • Compression fit
  • Coolmax interior gusset liner

Regular: $65.00 $40.05 (62%)

Your Price: $24.95
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