Base Layer Tops

Discover our Base Layer Tops collection, designed to provide essential comfort and moisture-wicking performance for any outdoor adventure. Ideal for layering under jackets or on their own, our tops keep you warm and dry in all conditions. Find your perfect base layer.

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Quick buy
ARC'TERYX
Rho LT Zip Neck (Men's)
$140.00
M L XL XXL
BLACK SAPPHIRE
Rho LT Zip Neck (Men's)
Quick buy
ARC'TERYX
Rho Zip Neck (Women's)
$140.00
S M L XL
BLACK
Rho Zip Neck (Women's)
Quick buy
ICEBREAKER
125 ZoneKnit™ Merino Blend Long Sleeve Crewe Thermal Top (Women's)
$150.00
S M L XL
JET HEATHER-BLACK
125 ZoneKnit™ Merino Blend Long Sleeve Crewe Thermal Top (Women's)
 TANG-PRALINE
125 ZoneKnit™ Merino Blend Long Sleeve Crewe Thermal Top (Women's)
Quick buy
ICEBREAKER
125 ZoneKnit™ Merino Blend Long Sleeve Crewe Thermal Top (Men's)
$150.00
S M L XL
CLOUD RAY-HYPER
125 ZoneKnit™ Merino Blend Long Sleeve Crewe Thermal Top (Men's)
 JET HEATHER-BLACK
125 ZoneKnit™ Merino Blend Long Sleeve Crewe Thermal Top (Men's)
Quick buy
SMARTWOOL
Classic All-Season Merino Base Layer 1/4 Zip Boxed (Women's) - SW016905
$120.00
XS S M L XL
EGGPLANT
Classic All-Season Merino Base Layer 1/4 Zip Boxed (Women's) - SW016905
 TWILIGHT BLUE
Classic All-Season Merino Base Layer 1/4 Zip Boxed (Women's) - SW016905
Quick buy
THE NORTH FACE
Summit Series Altimetro ¾-Zip Top (Women’s)
$120.00 $169.99
Sale
S M L
TNF BLACK
Summit Series Altimetro ¾-Zip Top (Women’s)
Quick buy
SWIX
RaceX Dry Half Zip (Men's)
$90.00
M L XL
BLACK-PHANTOM
RaceX Dry Half Zip (Men's)
Quick buy
SWIX
RaceX Dry Half Zip (Women's)
$90.00
S M L
DUSTY PURPLE - LIGHT PURPLE
RaceX Dry Half Zip (Women's)
Quick buy
SWIX
RaceX Classic Wind Half Zip (Men's)
$85.00
M L XL
BLACK
RaceX Classic Wind Half Zip (Men's)
Quick buy
SWIX
RaceX Classic Half Zip (Men's)
$80.00
S M L XL
BLACK - PHANTOM
RaceX Classic Half Zip (Men's)
 DARK NAVY - BRIGHT WHITE
RaceX Classic Half Zip (Men's)
Quick buy
SWIX
RaceX Classic Half Zip (Women's)
$80.00
XS S M L
DARK NAVY - LAKE BLUE
RaceX Classic Half Zip (Women's)
 DUSTY PURPLE - LIGHT PURPLE
RaceX Classic Half Zip (Women's)
Quick buy
SWIX
RaceX Classic Long Sleeve (Men's)
$70.00
M L XL
BLACK
RaceX Classic Long Sleeve (Men's)
 COBALT
RaceX Classic Long Sleeve (Men's)
Quick buy
SWIX
RaceX Classic Long Sleeve (Women's)
$70.00
S M L
OLIVE-BRIGHT WHITE
RaceX Classic Long Sleeve (Women's)
 COBALT
RaceX Classic Long Sleeve (Women's)
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer Crew Plus Boxed (Women's) - SW016803
$140.00
1X 2X 3X 4X
CHARCOAL HEATHER
Classic Thermal Merino Base Layer Crew Plus Boxed (Women's) - SW016803
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer Colorblock Crew Boxed (Men's) - SW016354
$90.00 $140.00
Sale
S M L XL
PEWTER BLUE HEATHER
Classic Thermal Merino Base Layer Colorblock Crew Boxed (Men's) - SW016354
 CHARCOAL-ARG PURPLE
Classic Thermal Merino Base Layer Colorblock Crew Boxed (Men's) - SW016354
 BLACK-WINTER MOSS
Classic Thermal Merino Base Layer Colorblock Crew Boxed (Men's) - SW016354
Quick buy
RAB
Conduit Hoody (Women's)
$115.00
8 10 12 14 16
BELUGA
Conduit Hoody (Women's)
 PATROIT BLUE
Conduit Hoody (Women's)
Quick buy
RAB
Conduit Pull-On (Women's)
$105.00
8 10 12 14
ULTRAMARINE
Conduit Pull-On (Women's)
 DEEP HEATHER
Conduit Pull-On (Women's)
Quick buy
RAB
Conduit Pull-On (Men's)
$105.00
M L XL
INK
Conduit Pull-On (Men's)
 LIGHT KHAKI
Conduit Pull-On (Men's)
Quick buy
SMARTWOOL
Classic All-Season Merino Base Layer 1/4 Zip (Men's)
$120.00
S M L XL XXL
BLACK
Classic All-Season Merino Base Layer 1/4 Zip (Men's)
 TWILIGHT BLUE
Classic All-Season Merino Base Layer 1/4 Zip (Men's)
Quick buy
SMARTWOOL
Classic All-Season Merino Base Layer Long Sleeve Boxed Plus (Women's) - SW016915
$115.00
1X 2X 3X
TWILIGHT BLUE
Classic All-Season Merino Base Layer Long Sleeve Boxed Plus (Women's) - SW016915
Quick buy
ICEBREAKER
Merino Sphere II Long Sleeve T-Shirt (Women's)
$100.00
S M L
BLACK
Merino Sphere II Long Sleeve T-Shirt (Women's)
 GO BERRY HEATHER
Merino Sphere II Long Sleeve T-Shirt (Women's)
Quick buy
ICEBREAKER
Merino Sphere II Short Sleeve T-Shirt (Women's)
$90.00
S M L
GREEN GLORY HEATHER
Merino Sphere II Short Sleeve T-Shirt (Women's)
 VIBRANT EARTH HEATHE
Merino Sphere II Short Sleeve T-Shirt (Women's)
Quick buy
SMARTWOOL
Intraknit Active Base Layer Long Sleeve (Men's) - SW012790
From $85.00 $135.00
Sale
M L XL
BLACK
Intraknit Active Base Layer Long Sleeve (Men's) - SW012790
 LEAD
Intraknit Active Base Layer Long Sleeve (Men's) - SW012790
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer Pattern 1/4 Zip Plus Boxed (Women's)
$98.00 $150.00
Sale
1X 2X 3X
BLACK DOT
Classic Thermal Merino Base Layer Pattern 1/4 Zip Plus Boxed (Women's)
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer 1/4 Zip Plus Boxed (Women's)
$98.00 $150.00
Sale
1X 2X 3X
BLACK CHERRY HEATHER
Classic Thermal Merino Base Layer 1/4 Zip Plus Boxed (Women's)
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer Pattern Crew Plus Boxed (Women's)
From $90.00 $140.00
Sale
1X 2X 3X
BLACK DOT
Classic Thermal Merino Base Layer Pattern Crew Plus Boxed (Women's)
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer Pattern Crew Boxed (Men's)
From $90.00 $140.00
Sale
S M L XL
BLACK MOUNTAIN SCAPE
Classic Thermal Merino Base Layer Pattern Crew Boxed (Men's)
Quick buy
SMARTWOOL
Classic All-Season Merino Base Layer Long Sleeve Boxed (Women's) - SW016913
$115.00
XS S M L XL
BLACK
Classic All-Season Merino Base Layer Long Sleeve Boxed (Women's) - SW016913
 TWILIGHT BLUE
Classic All-Season Merino Base Layer Long Sleeve Boxed (Women's) - SW016913
 EGGPLANT
Classic All-Season Merino Base Layer Long Sleeve Boxed (Women's) - SW016913
Quick buy
SMARTWOOL
Classic All-Season Merino Base Layer Long Sleeve Boxed (Men's) - SW016953
$115.00
S M L XL XXL
BLACK
Classic All-Season Merino Base Layer Long Sleeve Boxed (Men's) - SW016953
 FERN GREEN
Classic All-Season Merino Base Layer Long Sleeve Boxed (Men's) - SW016953
 LAGUNA BLUE-DEEP NAVY
Classic All-Season Merino Base Layer Long Sleeve Boxed (Men's) - SW016953
 IRON HEATHER
Classic All-Season Merino Base Layer Long Sleeve Boxed (Men's) - SW016953
+ 1 more
Quick buy
SMARTWOOL
Classic All-Season Plant-Based-Dye Merino Base Layer Long-Sleeve Boxed (Men's) - SW016955
From $85.00 $115.00
Sale
M L XL
INDIGO BLUE
Classic All-Season Plant-Based-Dye Merino Base Layer Long-Sleeve Boxed (Men's) - SW016955
Quick buy
ICEBREAKER
Merino 200 Oasis Long Sleeve Half Zip Thermal Top (Men's)
$135.00
M L XL S
BLACK
Merino 200 Oasis Long Sleeve Half Zip Thermal Top (Men's)
 LODEN
Merino 200 Oasis Long Sleeve Half Zip Thermal Top (Men's)
Quick buy
SWIX
RaceX Bodywear 1/2 Zip (Women's)
$75.00
M L XL
BLUE SEA
RaceX Bodywear 1/2 Zip (Women's)
 DARK NAVY
RaceX Bodywear 1/2 Zip (Women's)
Quick buy
RAB
Power Stretch Pro Pull-On (Women's)
From $125.00 $175.00
Sale
8 10 12 14 16
DEEP INK
Power Stretch Pro Pull-On (Women's) Deep Ink QFE-63
Quick buy
BONNETIER
Basic Luxe (Women's)
$135.00
XS S M L
CHERRY-FERN
Basic Luxe (Women's)
 CHERRY-BEAR
Basic Luxe (Women's)
 SUN-MOUNTAINS
Basic Luxe (Women's)
 BURNT ORANGE-PINE
Basic Luxe (Women's)
+ 1 more
Quick buy
BONNETIER
Techcrew Top - Mid Layer (Men's)
$135.00
M L XL S
OLIVE
Techcrew Top - Mid Layer (Men's)
 BLACK
Techcrew Top - Mid Layer (Men's)
 HEATHER BLUE
Techcrew Top - Mid Layer (Men's)
 HEATHER GREY
Techcrew Top - Mid Layer (Men's)
 HEATHER BLUE-DESCENT
Techcrew Top - Mid Layer (Men's)
+ 2 more
Quick buy
ICEBREAKER
260 Tech LS Crewe (Women's)
$145.00
XS S M L XL
BLACK
260 Tech LS Crewe (Women's)
Quick buy
ARC'TERYX
Rho LT Zip Neck (Men's)
$140.00
S M L XL 2XL
BLACK
Rho LT Zip Neck (Men's)
 BLACK SAPPHIRE
Rho LT Zip Neck (Men's)

1 review
Quick buy
ARC'TERYX
Rho Heavyweight Zip Neck (Men's)
$190.00
S M L XL 2XL
BLACK SAPPHIRE
Rho Heavyweight Zip Neck (Men's)
 BLACK
Rho Heavyweight Zip Neck (Men's)
Quick buy
ICEBREAKER
Merino Siren Tank Top (Women's)
$85.00
XS S M L XL
BLACK
Merino Siren Tank Top (Women's)
Quick buy
EXOFFICIO
Give-N-Go® 2.0 Crew Neck Tee (Men's)
$49.99
S M L XL
BLACK
Give-N-Go® 2.0 Crew Neck Tee (Men's)
 STEEL ONYX
Give-N-Go® 2.0 Crew Neck Tee (Men's)
 WHITE
Give-N-Go® 2.0 Crew Neck Tee (Men's)
Quick buy
SMARTWOOL
Merino Sport Crankset Short Sleeve Graphic Tee (Women's) - Past Season
$50.00 $75.00
Sale
S M
MANGO SORBET
Merino Sport Crankset Short Sleeve Graphic Tee (Women's) - Past Season
Quick buy
ICEBREAKER
Merino Sphere II Long Sleeve T-Shirt (Men's)
From $60.00 $100.00
Sale
S M L XL 2XL
BLACK
Merino Sphere II Long Sleeve T-Shirt (Men's)
 METRO HEATHER
Merino Sphere II Long Sleeve T-Shirt (Men's)
 VIBRANT EARTH HEATHE
Merino Sphere II Long Sleeve T-Shirt (Men's)
 GREEN GLORY HEATHER
Merino Sphere II Long Sleeve T-Shirt (Men's)
+ 1 more
Quick buy
HELLY HANSEN
Lifa Merino Set (Junior) - Past Season
From $75.00 $129.99
Sale
8 10 12 14
GREY MELANGE
Lifa Merino Set (Junior) - Past Season
Quick buy
SWIX
RaceX BodyW Long Sleeve (Men's)
$70.00
M L XL 2XL
GREY MELANGE
RaceX BodyW Long Sleeve (Men's)
Quick buy
SWIX
RaceX Bodyw Half Zip (Men's)
$75.00
L XL M
BLUE SEA
RaceX Bodyw Half Zip (Men's)
Quick buy
HELLY HANSEN
LIFA® Merino Base Layer Set (Kids)
$89.99
3 4 5 6 7 8 9
GREY MELANGE
LIFA® Merino Base Layer Set (Kids)
 NAVY
LIFA® Merino Base Layer Set (Kids)
 PINK ASH
LIFA® Merino Base Layer Set (Kids)
 POWDER GREEN
LIFA® Merino Base Layer Set (Kids)
 WISTERIA PURPLE
LIFA® Merino Base Layer Set (Kids)
+ 3 more
Quick buy
ICEBREAKER
Merino 260 Tech Long Sleeve Half Zip Thermal Top (Men's)
$155.00
S M L XL 2XL
BLACK
Merino 260 Tech Long Sleeve Half Zip Thermal Top (Men's)
 GRITSTONE HEATHER
Merino 260 Tech Long Sleeve Half Zip Thermal Top (Men's)
Quick buy
ICEBREAKER
Merino 260 Tech Long Sleeve Crewe Thermal Top (Men's)
$145.00
S M L XL 2XL 3XL
GRITSTONE
Merino 260 Tech Long Sleeve Crewe Thermal Top (Men's)
 BLACK
Merino 260 Tech Long Sleeve Crewe Thermal Top (Men's)
Quick buy
ICEBREAKER
BodyfitZone™ Merino 260 Zone Long Sleeve Half Zip Thermal Top (Men's) - Past Season
From $98.00 $170.00
Sale
S L XL 2XL
JET HEATHER-BLACK
BodyfitZone™ Merino 260 Zone Long Sleeve Half Zip Thermal Top (Men's) - Past Season
Quick buy
ICEBREAKER
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Women's)
$125.00
XS S M L XL
BLACK
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Women's)
 GRITSTONE HEATHER
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Women's)
 MIDNIGHT NAVY
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Women's)