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.

Sale

Adidas Terrex Icesky 1/2 Zip Long Sleeve for Women

SKU: ADSTIZLW

  • Climawarm Technology
  • FORMOTION Technology
  • 1/2-Zip
  • Fitted Collar

Regular: $65.00 $33.05 (51%)

Your Price: $31.95
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Sale

Arc'teryx RHO LT Zip Neck for Women

SKU: ARCLZNW

  • Moisture-wicking
  • Warm when wet
  • Resists odors
  • Flatlock seams

Regular: $119.00 $39.05 (33%)

Starting at: $79.95
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Your Price: $65.00
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Out of Stock + Wish list

Your Price: $149.00
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Arc'teryx RHO AR Zip Neck for Men

SKU: ARCRAZNM

  • Moisture wicking
  • Great warmth-to-weight ratio
  • Flatlock construction
  • Collar zipper

Your Price: $139.00
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Arc'Teryx Atom LT Vest Womens

SKU: ARCALVW

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

Your Price: $169.00
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Arc'teryx Rho AR Zip Neck for Women

SKU: ARCRAZNW

  • Moisture-wicking
  • Great warmth-to-weight ratio
  • Flatlock construction
  • Collar zipper

Your Price: $139.00
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Arc'teryx Atom LT Vest for Men

SKU: ARCALVM

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

Your Price: $169.00
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Sale

ColdPruf Authentic 93 Crew for Men

SKU: CLDACM

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

Regular: $20.99 $4.00 (19%)

Starting at: $16.99
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Sale

ColdPruf Classic 170 Silk Weight Merino Wool Crew for Men

SKU: CLDCCM

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

Regular: $46.99 $12.00 (26%)

Starting at: $34.99
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ColdPruf Extreme Performance Crew for Women

SKU: CLDXCW

  • Two-layer engineering
  • Odor resistance
  • Moisture wicking
  • Hemmed cuffs

Your Price: $30.99
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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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Sale

Regular: $19.99 $5.00 (25%)

Starting at: $14.99
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Sale

ColdPruf Classic 170 Silk Weight Merino Wool Crew for Women

SKU: CLDCCW

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

Regular: $45.99 $11.00 (24%)

Starting at: $34.99
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Sale

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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Sale

ColdPruf Platinum Crew for Women

SKU: CLDPCW

  • Polyester
  • Flat Seams
  • Ring Spun Yarns
  • Thermachoice System

Regular: $19.99 $3.00 (15%)

Starting at: $16.99
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Sale

ColdPruf Expedition 85 Crew for Men

SKU: CLDEXCM

  • 100 percent polyester fleece
  • Moisture management
  • Single-layer engineering
  • Tagless

Regular: $15.99 $3.00 (19%)

Starting at: $12.99
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Sale

ColdPruf Basic 60S Top and Bottom Base Layer Set for Kids

SKU: CLDBK

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

Regular: $22.99 $4.00 (17%)

Starting at: $18.99
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Sale

ColdPruf Premium Performance 89 Crew for Men

SKU: CLDPPCM

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

Regular: $20.99 $5.00 (24%)

Starting at: $15.99
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