Merino Wool Midweight Base Layer

Discover the ultimate comfort and warmth with our merino wool midweight base layer collection. Designed for optimal insulation and moisture-wicking properties, these base layers keep you dry and cozy in any weather. The natural breathability of merino wool ensures you stay comfortable during high-intensity activities or relaxed outings. With a soft, lightweight feel, our midweight options provide the perfect foundation for layering. Elevate your outdoor adventures with versatile and durable pieces that offer both performance and style.

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104 products
View:  4896All|104 Products
SmartWool Men's Classic Thermal Merino 1/4 Zip Base Layer
  • Charcoal/Honey Gold

SmartWool Men's Classic Thermal Merino 1/4 Zip Base Layer

$145.00

On Sale
Smartwool Men's Intraknit Thermal Merino Base Layer Bottom
  • Black White

Smartwool Men's Intraknit Thermal Merino Base Layer Bottom

$97.97

WAS: $130.00*

On Sale
Smartwool Men's Classic Thermal Merino Base Layer Crew Top
  • Winter Moss Heather
  • Black
  • Black Color Shift

Smartwool Men's Classic Thermal Merino Base Layer Crew Top

$85.97-$115.00

WAS: $115.00*

On Sale
Smartwool Men's Classic Thermal Merino Base Layer Bottoms
  • Deep Navy
  • Charcoal Heather
  • Black

Smartwool Men's Classic Thermal Merino Base Layer Bottoms

$85.97-$115.00

WAS: $115.00*

Smartwool Men's Merino Classic All-Season Base Layer Long Sleeve
  • Black

Smartwool Men's Merino Classic All-Season Base Layer Long Sleeve

See Price in Cart

WAS: $90.00*

SmartWool Youth Classic Thermal ¼ Zip Base Layer
  • Rhythmic Red

SmartWool Youth Classic Thermal ¼ Zip Base Layer

$65.00

Smartwool Kids' Classic Thermal Merino Base Layer Crew
  • Power Pink

Smartwool Kids' Classic Thermal Merino Base Layer Crew

$64.95

Smartwool Kids' Classic Thermal Merino Base Layer Bottom
  • Cascade Multi Stripe

Smartwool Kids' Classic Thermal Merino Base Layer Bottom

$64.95

On Sale
Smartwool Men's Intraknit Thermal Max Merino Base Layer Three-Quarter Bottom
  • Black White

Smartwool Men's Intraknit Thermal Max Merino Base Layer Three-Quarter Bottom

See Price in Cart

WAS: $120.00*

Smartwool Women's Intraknit Thermal Merino Crew Baselayer Top
  • Black White Stripe
  • Black/White
  • Nightfall Blue/Deep Navy

Smartwool Women's Intraknit Thermal Merino Crew Baselayer Top

$130.00

On Sale
Smartwool Women's Merino 250 Pattern Baselayer Bottom
  • Blueberry Hill Mtn Scape

Smartwool Women's Merino 250 Pattern Baselayer Bottom

$82.97

WAS: $110.00*

SmartWool Women's Intraknit Active Base Layer Bottoms
  • Black

SmartWool Women's Intraknit Active Base Layer Bottoms

$110.00

On Sale
Smartwool Women's Merino 250 Pattern Crewneck Baselayer Top
  • Honey Gold Dot
  • Festive Fuschia Mtnscape
  • Light Gray Mountain Scape

Smartwool Women's Merino 250 Pattern Crewneck Baselayer Top

$82.97-$110.00

WAS: $110.00*

On Sale
Smartwool Men's Merino 250 Baselayer Bottom
  • Charcoal Heather
  • Black
  • Deep Navy

Smartwool Men's Merino 250 Baselayer Bottom

$85.97-$115.00

WAS: $115.00*

On Sale
Smartwool Women's Merino 250 Baselayer Top

Smartwool Women's Merino 250 Baselayer Top

See Price in Cart

WAS: $115.00*

Smartwool Men's Intraknit Thermal Merino Base Layer Crew Neck Long Sleeved T-Shirt
  • Charcoal Black
  • Winter Moss
  • Black/White

Smartwool Men's Intraknit Thermal Merino Base Layer Crew Neck Long Sleeved T-Shirt

$130.00

On Sale
Smartwool Men's Intraknit Thermal Merino Base Layer Colorblock Quarter-Zip Shirt
  • Shale Dune

Smartwool Men's Intraknit Thermal Merino Base Layer Colorblock Quarter-Zip Shirt

$100.97

WAS: $135.00*

Smartwool Women's Classic Thermal Merino Baselayer Bottoms

Smartwool Women's Classic Thermal Merino Baselayer Bottoms

See Price in Cart

WAS: $115.00*

On Sale
Smartwool Men's Intraknit Thermal Merino Base Layer Colorblock Crew Neck T-Shirt
  • Deep Navy/Twilight Blue
  • Charcoal/Winter Moss
  • Winter Moss/Charcoal

Smartwool Men's Intraknit Thermal Merino Base Layer Colorblock Crew Neck T-Shirt

$96.97-$130.00

WAS: $130.00*

Smartwool Women's Merino 250 1/4 Zip Baselayer Top
  • Black

Smartwool Women's Merino 250 1/4 Zip Baselayer Top

$120.00

Smartwool Women's Thermal Merino Rib Top
  • Black
  • Toasted Coconut Heather
  • Chalk Violet Heather

Smartwool Women's Thermal Merino Rib Top

$130.00

On Sale
Smartwool Men's Classic Thermal Merino Base Layer Pattern Quarter Zip Pullover
  • Charcoal Heather
  • Deep Navy Color Shift

Smartwool Men's Classic Thermal Merino Base Layer Pattern Quarter Zip Pullover

$89.97-$120.00

WAS: $120.00*

SmartWool Women's Intraknit Active Base Layer Long Sleeve Shirt
  • Black

SmartWool Women's Intraknit Active Base Layer Long Sleeve Shirt

$110.00

On Sale
Smartwool Men's Merino 250 1/4 Zip Baselayer Top

Smartwool Men's Merino 250 1/4 Zip Baselayer Top

$89.97-$120.00

WAS: $120.00*

On Sale
Smartwool Men's Merino 250 Baselayer Crewneck Shirt

Smartwool Men's Merino 250 Baselayer Crewneck Shirt

See Price in Cart

WAS: $115.00*

Smartwool Women's Thermal Merino Crew
  • Charcoal Heather
  • Toasted Coconut Heather
  • Arctic Green Heather

Smartwool Women's Thermal Merino Crew

$120.00

On Sale
Smartwool Women's Intraknit Thermal Merino Pattern Baselayer Top
  • Black
  • Deep Navy

Smartwool Women's Intraknit Thermal Merino Pattern Baselayer Top

$96.97-$130.00

WAS: $130.00*

Smartwool Youth Merino 250 Pattern Crewneck Baselayer Top
  • Sunset Coral Mountain

Smartwool Youth Merino 250 Pattern Crewneck Baselayer Top

$60.00

On Sale
Smartwool Women's Classic Thermal Merino Baselayer Long Sleeve Shirt

Smartwool Women's Classic Thermal Merino Baselayer Long Sleeve Shirt

$85.97-$115.00

WAS: $115.00*

On Sale
Hot Chillys Women's Clima-Wool Merino Bottom
  • Nightfall

Hot Chillys Women's Clima-Wool Merino Bottom

See Price in Cart

WAS: $125.00*

On Sale
Hot Chillys Men's Clima-Wool Merino Bottom
  • Nightfall
  • Od Green

Hot Chillys Men's Clima-Wool Merino Bottom

See Price in Cart

WAS: $125.00*

Smartwool Women's Merino 250 Pattern 1/4 Zip Baselayer Shirt
  • Jade Marble

Smartwool Women's Merino 250 Pattern 1/4 Zip Baselayer Shirt

$115.00

Smartwool Youth Merino 250 Baselayer Bottom
  • Power Pink

Smartwool Youth Merino 250 Baselayer Bottom

$49.97-$60.00

WAS: $60.00*

Smartwool Men's Intraknit Merino 200 Pattern Crewneck Baselayer Top
  • Honey Gold Mountain

Smartwool Men's Intraknit Merino 200 Pattern Crewneck Baselayer Top

$130.00

On Sale
Smartwool Thermal Merino Pattern Crew
  • Black Mountain Print
  • Laguna

Smartwool Thermal Merino Pattern Crew

$81.97

WAS: $110.00*

icebreaker Women's Merino Blend 200 Realfleece Descender 1/2 Zip Long Sleeve Top
  • Graphite/Black/Cb

icebreaker Women's Merino Blend 200 Realfleece Descender 1/2 Zip Long Sleeve Top

$160.00

icebreaker Men's Merino Blend 200 Realfleece Descender 1/2 Zip Long Sleeve Top
  • Fathom Green/Cloud Ray/Cb
  • Black/Graphite/Cb

icebreaker Men's Merino Blend 200 Realfleece Descender 1/2 Zip Long Sleeve Top

$160.00

On Sale
Smartwool Women's Thermal Merino ¼ Zip Pullover
  • Charcoal Heather
  • Black Cherry Heather
  • Purple Iris Floral

Smartwool Women's Thermal Merino ¼ Zip Pullover

$89.97-$120.00

WAS: $120.00*

On Sale
Smartwool Women's Intraknit Thermal Merino Baselayer Leggings
  • Black/White

Smartwool Women's Intraknit Thermal Merino Baselayer Leggings

$97.97

WAS: $130.00*

On Sale
Smartwool Men's Thermal Merino 1/4 Zip Pullover
  • Charcoal Heather
  • Black

Smartwool Men's Thermal Merino 1/4 Zip Pullover

See Price in Cart

WAS: $120.00*

On Sale
Smartwool Women's Intraknit Thermal Base Layer 3/4 Leggings
  • Black White

Smartwool Women's Intraknit Thermal Base Layer 3/4 Leggings

$89.97

WAS: $120.00*

icebreaker Women's Merino 260 Quantum IV Long Sleeve Zip Hoodie
  • Lichen
  • Dawn
  • Black

icebreaker Women's Merino 260 Quantum IV Long Sleeve Zip Hoodie

$240.00

Halfdays Women's Fay Merino Baselayer Top
  • Spiked Cocoa
  • Black
  • Navy

Halfdays Women's Fay Merino Baselayer Top

$95.00-$130.00

On Sale
Smartwool Women's Merino 250 Baselayer Leggings

Smartwool Women's Merino 250 Baselayer Leggings

$85.97-$115.00

WAS: $115.00*

On Sale
Smartwool Women's Thermal Merino Boxed 1/4 Zip
  • Black/Charcoal Heather

Smartwool Women's Thermal Merino Boxed 1/4 Zip

See Price in Cart

WAS: $125.00*

On Sale
Outdoor Research Alpine Onset Merino 240 Sensor Liner
  • Black
  • Light Pewter

Outdoor Research Alpine Onset Merino 240 Sensor Liner

$33.97-$45.00

WAS: $45.00*

icebreaker Men's Merino 125 Cool-Lite Sphere III Long-Sleeve Shirt
  • Metro Heather
  • Black
  • Dawn Heather

icebreaker Men's Merino 125 Cool-Lite Sphere III Long-Sleeve Shirt

$85.00

On Sale
Smartwool Women's Thermal Merino Pattern Crewneck Long Sleeve Shirt
  • Light Gray Mtn Fairisle
  • Festive Fuschia Mtnscape

Smartwool Women's Thermal Merino Pattern Crewneck Long Sleeve Shirt

$81.97

WAS: $110.00*

icebreaker Women's Merino Blend 200 Realfleece Descender Long Sleeve Zip Hoodie
  • Graphite/Black/Cb

icebreaker Women's Merino Blend 200 Realfleece Descender Long Sleeve Zip Hoodie

$180.00

Smartwool Men's Intraknit Merino 200 1/4 Zip
  • Deep Navy
  • Black/White

Smartwool Men's Intraknit Merino 200 1/4 Zip

$140.00

icebreaker Men's Merino 150 Tech Lite III T-Shirt

icebreaker Men's Merino 150 Tech Lite III T-Shirt

$100.00

icebreaker Men's 125 ZoneKnit Merino Thermal Long Sleeve Shirt
  • Fathom Green/Cloud Ray/Cb
  • Ether
  • Black

icebreaker Men's 125 ZoneKnit Merino Thermal Long Sleeve Shirt

$100.00

Icebreaker Women's Merino 150 Tech Lite III T-Shirt

Icebreaker Women's Merino 150 Tech Lite III T-Shirt

$80.00

icebreaker Men's Merino Blend 200 Realfleece Descender Long Sleeve Zip Hoodie
  • Hyper
  • Black/Graphite/Cb

icebreaker Men's Merino Blend 200 Realfleece Descender Long Sleeve Zip Hoodie

$180.00

icebreaker Women's Merino 150 Tech Lite III Short Sleeve T-Shirt
  • Black

icebreaker Women's Merino 150 Tech Lite III Short Sleeve T-Shirt

$85.00

Icebreaker Women's Merino 150 Tech Lite III Short Sleeve T-Shirt
  • Black
  • Dawn

Icebreaker Women's Merino 150 Tech Lite III Short Sleeve T-Shirt

$80.00

Icebreaker Women's Merino 150 Tech Lite III Short Sleeve T-Shirt
  • Lux
  • Ecru Heather

Icebreaker Women's Merino 150 Tech Lite III Short Sleeve T-Shirt

$85.00

Icebreaker Women's Merino 150 Tech Lite III Short Sleeve T-Shirt
  • Graphite

Icebreaker Women's Merino 150 Tech Lite III Short Sleeve T-Shirt

$85.00

Icebreaker Women's Merino 150 Tech Lite III Short Sleeve T-Shirt
  • Midnight Navy
  • Black
  • Glow

Icebreaker Women's Merino 150 Tech Lite III Short Sleeve T-Shirt

$80.00

icebreaker Men's Merino 150 Tech Lite III Short Sleeve T-Shirt
  • Black
  • Dawn

icebreaker Men's Merino 150 Tech Lite III Short Sleeve T-Shirt

$85.00

icebreaker Men's Merino 150 Tech Lite III Short Sleeve T-Shirt
  • Dawn

icebreaker Men's Merino 150 Tech Lite III Short Sleeve T-Shirt

$85.00

Icebreaker Men's Merino 150 Tech Lite III T-Shirt

Icebreaker Men's Merino 150 Tech Lite III T-Shirt

$80.00

Icebreaker Men's Merino 150 Tech Lite III T-Shirt
  • Black

Icebreaker Men's Merino 150 Tech Lite III T-Shirt

$85.00

Adidas Men's Terrex Xperior Merino 150 Baselayer Long-Sleeve Top
  • Grey Five

Adidas Men's Terrex Xperior Merino 150 Baselayer Long-Sleeve Top

$100.00

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On Sale
Smartwool Men's Classic All-Season Merino Base Layer Long Sleeve Top
  • Black
  • Iron Heather

Smartwool Men's Classic All-Season Merino Base Layer Long Sleeve Top

$63.97-$85.00

WAS: $85.00*

Smartwool Men's Classic All-Season Merino Base Layer 1/4 Zip Long Sleeve Top
  • Black

Smartwool Men's Classic All-Season Merino Base Layer 1/4 Zip Long Sleeve Top

$90.00

On Sale
Smartwool Men's Classic All-Season Merino Baselayer Bottoms
  • Black
  • Iron Heather

Smartwool Men's Classic All-Season Merino Baselayer Bottoms

$63.97-$85.00

WAS: $85.00*

SmartWool Women's Merino 150 Base Layer Bottoms
  • Black

SmartWool Women's Merino 150 Base Layer Bottoms

$90.00

SmartWool Merino 150 Base Layer Long Sleeve Shirt
  • Black

SmartWool Merino 150 Base Layer Long Sleeve Shirt

$90.00

Smartwool Women's Thermal Merino Turtleneck Ribbed Sweater
  • Chalk Violet Heather
  • Arctic Green Heather
  • Charcoal Heather

Smartwool Women's Thermal Merino Turtleneck Ribbed Sweater

$120.00

Smartwool Men's Merino SS Tee

Smartwool Men's Merino SS Tee

$80.00

Smartwool Men's Everyday Exploration Merino Long Sleeve T-Shirt
  • Deep Navy Heather
  • Medium Gray Heather

Smartwool Men's Everyday Exploration Merino Long Sleeve T-Shirt

$80.00

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