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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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80 products
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80 products
FeaturedBest sellingAlphabetically, A-ZAlphabetically, Z-APrice, low to highPrice, high to lowDate, old to newDate, new to old
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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) - IB104387
$150.00
XS S M L XL
BLACK
260 Tech LS Crewe (Women's) - IB104387
Quick buy
SMARTWOOL
Intraknit™ Thermal Merino Base Layer Crew (Women's) - SW019284
From $110.00 $160.00
Sale
XS S M L XL
EMERALD-WHITE
Intraknit™ Thermal Merino Base Layer Crew (Women's) - SW019284
 BLACK CHERRY - VIOLET
Intraknit™ Thermal Merino Base Layer Crew (Women's) - SW019284
 BLACK - WHITE
Intraknit™ Thermal Merino Base Layer Crew (Women's) - SW019284
 NIVAL BLUE-POOL BLUE
Intraknit™ Thermal Merino Base Layer Crew (Women's) - SW019284
 BLACK CHERRY
Intraknit™ Thermal Merino Base Layer Crew (Women's) - SW019284
+ 2 more
Quick buy
ARC'TERYX
Rho Heavyweight Zip Neck (Men's) - X000006266 - Past Season
$170.00
S M L XL 2XL
BLACK SAPPHIRE
Rho Heavyweight Zip Neck (Men's) - X000006266 - Past Season
 BLACK
Rho Heavyweight Zip Neck (Men's) - X000006266 - Past Season
Quick buy
ICEBREAKER
Merino Siren Tank Top (Women's) - IB103213
$85.00
XS S M L XL
BLACK
Merino Siren Tank Top (Women's) - IB103213
 UNDYED
Merino Siren Tank Top (Women's) - IB103213
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
HELLY HANSEN
Lifa Merino Set (Junior) - 48659 - Past Season
$65.00 $129.99
Sale
8 10 12 14
GREY MELANGE
Lifa Merino Set (Junior) - 48659 - Past Season
Quick buy
SWIX
RaceX BodyW Long Sleeve (Men's) - 40811 - Past Season
$50.00 $70.00
Sale
M L XL 2XL
GREY MELANGE
RaceX BodyW Long Sleeve (Men's) - 40811 - Past Season
 BLUE SEA
RaceX BodyW Long Sleeve (Men's) - 40811 - Past Season
Quick buy
SWIX
RaceX Bodyw Half Zip (Men's) - SW40821 - Past Season
$50.00 $75.00
Sale
L XL M
BLUE SEA
RaceX Bodyw Half Zip (Men's) - SW40821 - Past Season
 GREY MELANGE
RaceX Bodyw Half Zip (Men's) - SW40821 - Past Season
 DARK NAVY
RaceX Bodyw Half Zip (Men's) - SW40821 - Past Season
Quick buy
SMARTWOOL
Intraknit™ Thermal Merino Base Layer Colorblock Crew (Men's) - SW016453
$160.00
S M L XL
DEEP NAVY-TWILIGHT BLUE
Intraknit™ Thermal Merino Base Layer Colorblock Crew (Men's) - SW016453
 CHARCOAL-WINTER MOSS
Intraknit™ Thermal Merino Base Layer Colorblock Crew (Men's) - SW016453
 CHARCOAL-HONEY GOLD
Intraknit™ Thermal Merino Base Layer Colorblock Crew (Men's) - SW016453
Quick buy
HELLY HANSEN
LIFA® Merino Base Layer Set (Kids) - 48610 - Past Season
$50.00 $89.99
Sale
3 4 5 6 7 8 9
WISTERIA PURPLE
LIFA® Merino Base Layer Set (Kids) - 48610 - Past Season
 NAVY
LIFA® Merino Base Layer Set (Kids) - 48610 - Past Season
 GREY MELANGE
LIFA® Merino Base Layer Set (Kids) - 48610 - Past Season
 PINK ASH
LIFA® Merino Base Layer Set (Kids) - 48610 - Past Season
 POWDER GREEN
LIFA® Merino Base Layer Set (Kids) - 48610 - Past Season
+ 3 more
Quick buy
ICEBREAKER
Merino 260 Tech Long Sleeve Crewe Thermal Top (Men's) - IB104371
$150.00
S M L XL 2XL 3XL
GRITSTONE
Merino 260 Tech Long Sleeve Crewe Thermal Top (Men's) - IB104371
 BLACK
Merino 260 Tech Long Sleeve Crewe Thermal Top (Men's) - IB104371
Quick buy
ICEBREAKER
BodyfitZone™ Merino 260 Zone Long Sleeve Half Zip Thermal Top (Men's) - IB104361 - Past Season
$80.00 $170.00
Sale
S L XL 2XL
JET HEATHER-BLACK
BodyfitZone™ Merino 260 Zone Long Sleeve Half Zip Thermal Top (Men's) - IB104361 - Past Season
Quick buy
ICEBREAKER
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Women's) - IB104375
$130.00
XS S M L XL
BLACK
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Women's) - IB104375
 GRITSTONE HEATHER
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Women's) - IB104375
 MIDNIGHT NAVY
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Women's) - IB104375
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer Crew Boxed (Men's) - SW016350
$140.00
S M L XL 2XL
BLACK
Classic Thermal Merino Base Layer Crew Boxed (Men's) - SW016350
 DEEP NAVY COLOUR SHIFT
Classic Thermal Merino Base Layer Crew Boxed (Men's) - SW016350
 NORTH WOODS FOGGY PINES
Classic Thermal Merino Base Layer Crew Boxed (Men's) - SW016350
 NIVAL BLUE-DEEP NAVY
Classic Thermal Merino Base Layer Crew Boxed (Men's) - SW016350
 BLACK RETRO LINE
Classic Thermal Merino Base Layer Crew Boxed (Men's) - SW016350
 WINTER MOSS HEATHER
Classic Thermal Merino Base Layer Crew Boxed (Men's) - SW016350
 CHARCOAL HEATHER
Classic Thermal Merino Base Layer Crew Boxed (Men's) - SW016350
 BLACK COLOUR SHIFT
Classic Thermal Merino Base Layer Crew Boxed (Men's) - SW016350
+ 5 more
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer Crew Boxed (Women's) - SW016370
From $90.00 $140.00
Sale
XS S M L XL
TWILIGHT BLUE: MOUNTAIN SCAPE
Classic Thermal Merino Base Layer Crew Boxed (Women's) - SW016370
 PURPLE IRIS FLORAL
Classic Thermal Merino Base Layer Crew Boxed (Women's) - SW016370
 BLACK DOT
Classic Thermal Merino Base Layer Crew Boxed (Women's) - SW016370
 ULTRA VIOLET
Classic Thermal Merino Base Layer Crew Boxed (Women's) - SW016370
 BLACK
Classic Thermal Merino Base Layer Crew Boxed (Women's) - SW016370
 TWILIGHT BLUE HEATHER
Classic Thermal Merino Base Layer Crew Boxed (Women's) - SW016370
 BLACK CHERRY HEATHER
Classic Thermal Merino Base Layer Crew Boxed (Women's) - SW016370
 CHARCOAL HEATHER
Classic Thermal Merino Base Layer Crew Boxed (Women's) - SW016370
 PURPLE IRIS HEATHER
Classic Thermal Merino Base Layer Crew Boxed (Women's) - SW016370
 TWILIGHT FOGGY PINES
Classic Thermal Merino Base Layer Crew Boxed (Women's) - SW016370
+ 7 more
Quick buy
HELLY HANSEN
LIFA® Merino Midweight Base Layer Set (Juniors') - 49403
From $80.00 $140.00
Sale
8 10 12 14 16
DEEP DIVE
LIFA® Merino Midweight Base Layer Set (Juniors') - 49403
 ULTRA BLUE
LIFA® Merino Midweight Base Layer Set (Juniors') - 49403
 GREY
LIFA® Merino Midweight Base Layer Set (Juniors') - 49403
 NAVY
LIFA® Merino Midweight Base Layer Set (Juniors') - 49403
+ 1 more
Quick buy
ICEBREAKER
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Men's) - IB104365
From $70.00 $130.00
Sale
S M L XL 2XL 3XL
CLOUD RAY
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Men's) - IB104365
 GRITSTONE HEATHER
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Men's) - IB104365
 MIDNIGHT NAVY
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Men's) - IB104365
 BLACK
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Men's) - IB104365
 LODEN
Merino 200 Oasis Long Sleeve Crewe Thermal Top (Men's) - IB104365
+ 2 more
Quick buy
SWIX
RaceX BodyW Halfzip Wind (Men's) - 40442 - Past Season
$60.00 $80.00
Sale
S M L XL
BLACK
RaceX BodyW Halfzip Wind (Men's) - 40442 - Past Season
Quick buy
SWIX
RaceX Bodywear Halfzip Wind (Women's) - 40447 - Past Season
$60.00 $80.00
Sale
S M L
Quick buy
SMARTWOOL
Intraknit Thermal Merino Base Layer Crew (Men's) - SW019286
$160.00
S M L XL 2XL
BLACK-WHITE
Intraknit Thermal Merino Base Layer Crew (Men's) - SW019286
 PEWTER BLUE-TWILIGHT
Intraknit Thermal Merino Base Layer Crew (Men's) - SW019286
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer 1/4 Zip Boxed (Women's) - SW002829
$150.00
Sold out
XS S M L XL
BLACK DIGI SNOW
Classic Thermal Merino Base Layer 1/4 Zip Boxed (Women's) - SW002829
Quick buy
SWIX
RaceX Classic Wind Half Zip (Women's) - SW10104-23
$68.00 $85.00
Sold out
S M L
BLACK
RaceX Classic Wind Half Zip (Women's) - SW10104-23
Quick buy
SMARTWOOL
Intraknit Active Base Layer Long Sleeve (Men's) - SW012790
$135.00
Sold out
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
ICEBREAKER
Merino Central Classic Short Sleeve T-Shirt (Men's) - IB0A56JX
$80.00
Sold out
M L XL
LODEN
Merino Central Classic Short Sleeve T-Shirt (Men's) - IB0A56JX
Quick buy
SMARTWOOL
Merino Sport Ultralite Short Sleeve (Women's)
From $40.00 $75.00
Sold out
XS S M L XL
GUAVA PINK
Merino Sport Ultralite Short Sleeve (Women's)
 POOL BLUE
Merino Sport Ultralite Short Sleeve (Women's)
 HAWAIIAN SURF
Merino Sport Ultralite Short Sleeve (Women's)
Quick buy
ICEBREAKER
Merino Sphere II Long Sleeve T-Shirt (Men's) - IB0A56D8 - Past Season
$50.00 $100.00
Sold out
S M L XL 2XL
BLACK
Merino Sphere II Long Sleeve T-Shirt (Men's) - IB0A56D8 - Past Season
 METRO HEATHER
Merino Sphere II Long Sleeve T-Shirt (Men's) - IB0A56D8 - Past Season
 VIBRANT EARTH HEATHE
Merino Sphere II Long Sleeve T-Shirt (Men's) - IB0A56D8 - Past Season
 GREEN GLORY HEATHER
Merino Sphere II Long Sleeve T-Shirt (Men's) - IB0A56D8 - Past Season
+ 1 more
Quick buy
ICEBREAKER
Merino 175 Everyday Long Sleeve Crewe Thermal Top (Women's) - IB104471
$95.00
Sold out
XS S M L XL
BLACK
Merino 175 Everyday Long Sleeve Crewe Thermal Top (Women's) - IB104471
Quick buy
ICEBREAKER
Merino 175 Everyday Long Sleeve Crewe Thermal Top (Men's) - IB104483
$95.00
Sold out
M L XL
BLACK
Merino 175 Everyday Long Sleeve Crewe Thermal Top (Men's) - IB104483
Quick buy
SMARTWOOL
Intraknit Thermal Merino Base Layer 1/4 Zip (Men's) - SW016260 - Past Season
$90.00 $170.00
Sold out
S M L XL 2XL
BLACK-WHITE
Intraknit Thermal Merino Base Layer 1/4 Zip (Men's) - SW016260 - Past Season