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

Regular: $60.00 $25.05 (42%)

Your Price: $34.95
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Minus33 Merino Wool Lightweight Crew for Men

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

Mammut Go Warm T-Shirt Baselayer for Women

SKU: MMTGWTW

  • Contoured cut
  • Extended back
  • 100% polyester microfiber
  • Merino wool and polyester mix
  • Antimicrobial feature

Regular: $60.00 $32.05 (53%)

Your Price: $27.95
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Minus33 Merino Wool Lightweight Crew Neck for Women

SKU: MINLCW

  • Jersey knit construction
  • 100% Merino Wool
  • Lightweight base layer
  • Flat lock seams
  • Machine dry

List: $59.99 $9.00 (15%)

Your Price: $50.99
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Top Rated Gear

List: $75.99 $11.00 (14%)

Your Price: $64.99
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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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SmartWool Midweight Crew Top for Women

SKU: SMTMDCW

  • Upf 50+ protection
  • Back Body Seam Wraps
  • Shoulder Panels
  • Flatlock Seam Construction 
  • Heat Transfer Logo

List: $95.00 $25.01 (26%)

Your Price: $69.99
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Terramar Women's Thermawool CS 4.0 Crew

SKU: TRMWTW4C

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

Your Price: $26.95
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Sale

Mountain Hardwear Wicked Lite T-Shirt Short Sleeve for Women

SKU: MHWWLSWN

  • Wicking, fast drying fabric
  • Antimicrobial finish controls odor
  • Flat-lock seam construction eliminates chafe
  • Reflective trim for visibility
  • MHW classic wicking tee

Regular: $35.00 $19.05 (54%)

Your Price: $15.95
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Minus33 Merino Wool Mid Weight 1/4 Length Zip for Women

SKU: MINMWQZW

  • 100% 18.5 Micron Merino Wool
  • 230 g/m2 interlock knit construction
  • Flat lock seams

List: $75.99 $11.00 (14%)

Your Price: $64.99
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Sale

Mammut Go Warm Longsleeve Zip Baselayer for Women

SKU: MMTGWZW

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

Regular: $77.00 $32.05 (42%)

Your Price: $44.95
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Sale

Mammut Go Warm Longsleeve Baselayer for Women

SKU: MMTGWLW

  • Contoured cut
  • Extended back
  • 100% Polyester microfiber
  • Merino wool and polyester mix
  • Antimicrobial feature

Regular: $69.00 $34.05 (49%)

Your Price: $34.95
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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 Tech Top Long Sleeve Midweight Crewe for Women

SKU: ICBTLMCW

  • Odor resistant
  • Breathable
  • Merino wool
  • Offset shoulders
  • Midweight

Your Price: $99.99
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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: $35.95
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Terramar Men's Thermolator II Half-Zip with Mesh Shirt

SKU: TRMMT2H

  • 86% Micro-Polyester and 14% Spandex
  • Qwik-Dri Thermoregulation Comfort Technology
  • Two Fabric Jersey and Mesh Construction
  • Ergonomic Zipper Pull
  • Anti-microbial

Your Price: $20.95
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Terramar Ecolator CS Fleece Scoop 3.0 for Women

SKU: TRMECS3W

  • Comfort in all seasons
  • Antimicrobial
  • Heavyweight
  • Breathable

Your Price: $25.95
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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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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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Your Price: $85.00
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