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.

Regular: $54.95

Closeout $27.95

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

In Stock

Regular: $13.95

Closeout $9.99

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  • Lightweight, HeatGear fabric
  • Articulated mesh fly panel
  • 4-Way Stretch fabrication
  • Signature Moisture Transport System
  • Anti-odor technology

In Stock

Regular: $49.95

Closeout $34.95

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

In Stock

ARCALVM
Starting at $169.00

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  • Moisture-resistant
  • Breathable, lightweight
  • Coreloft insulation
  • Wind resistant

In Stock Free Shipping

Regular: $65.00

Closeout $29.95

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  • Midweight, breathable
  • UPF 50
  • Quick drying and wicking
  • Reversible

In Stock

List: $25.95

Your Price $19.99

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

In Stock

Your Price $30.00

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

In Stock Free Shipping

Under Armour Coldgear Infrared Devo Crew for Men

SKU: UNACIDCM MFR: 1246915 005 SM

Regular: $69.99

Closeout $33.95

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  • Dual layer fabric
  • ColdGear infrared tech
  • 4 way stretch
  • Moisture transport

In Stock

Regular: $149.00

Closeout $99.95

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Regular: $54.95

Closeout $34.95

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  • Contoured cut
  • Extended back
  • Zip with zip-store
  • 100% polyester microfiber
  • Merino wool and polyester mix

In Stock

Regular: $35.00

Closeout $16.95

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  • Quick drying
  • Moisture wicking
  • Water resistant elastane
  • Flat lock seams

In Stock

Regular: $79.95

Closeout $36.95

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

In Stock

Regular: $20.99

Closeout $15.99

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  • Single layer engineering
  • Polyester, spandex
  • Max dryness, antimicrobial
  • Trim fit

In Stock

Regular: $94.95

Sale $41.95

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  • Midweight baselayer
  • Set-in sleeves
  • Flatlock seams
  • Form Fit

In Stock

List: $45.00

Your Price $28.95

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Regular: $44.99

Closeout $19.95

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  • Moisture wicking
  • Anti-microbial
  • 4-way stretch
  • CoolSwitch technology

In Stock

Regular: $59.95

Closeout $29.95

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  • Midweight baselayer
  • Zipper with chin guard
  • Flatlock seams
  • Moisture wicking

In Stock

Your Price $95.00

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  • Midweight baselayer
  • Covered elastic waistband
  • Traditional fly design
  • Form fit and mid rise

In Stock Free Shipping