Base Layer Bottoms

Shop our Base Layer Bottoms collection, designed to provide warmth and moisture-wicking performance for cold weather activities. Perfect for layering under pants, these bottoms offer comfort and insulation to keep you dry and warm.

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BLACK DIAMOND
Coefficient LT Pants (Women's)
$114.95
S M L
BLACK
Coefficient LT Pants (Women's)
 BLACKBERRY
Coefficient LT Pants (Women's)
Quick buy
ARC'TERYX
Rho Bottom (Women's)
$120.00
S M L XL
BLACK
Rho Bottom (Women's)
Quick buy
ICEBREAKER
Merino 260 Tech Leggings w/ Fly (Men's)
$150.00
XS S M L XL
BLACK
Merino 260 Tech Leggings w/ Fly (Men's)
Quick buy
SWIX
RaceX Classic Wind Pants (Men's)
$90.00
M L XL
BLACK
RaceX Classic Wind Pants (Men's)
Quick buy
SWIX
RaceX Classic Wind Pants (Women's)
$90.00
S M L
BLACK
RaceX Classic Wind Pants (Women's)
Quick buy
SWIX
RaceX Classic Pants (Women's)
$70.00
S M L XL
DARK NAVY
RaceX Classic Pants (Women's)
Quick buy
SWIX
RaceX Classic Pants (Men's)
$70.00
S M L XL
DARK NAVY
RaceX Classic Pants (Men's)
Quick buy
SMARTWOOL
Classic All-Season Merino Base Layer Bottom Boxed (Women's) - SW016909
$115.00
S M L XL
BLACK
Classic All-Season Merino Base Layer Bottom Boxed (Women's) - SW016909
 TWILIGHT BLUE
Classic All-Season Merino Base Layer Bottom Boxed (Women's) - SW016909
Quick buy
ARC'TERYX
Rho Heavyweight Bottom (Women's)
$170.00
XS S M L XL
BLACK
Rho Heavyweight Bottom (Women's)
Quick buy
RAB
Conduit Tights (Women's)
$95.00
8 10 12 14 16
BELUGA
Conduit Tights (Women's)
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer Bottom Plus Boxed (Women's)
From $98.00 $140.00
Sale
1X 2X 3X 4X
BLACK
Classic Thermal Merino Base Layer Bottom Plus Boxed (Women's)
 BLACK CHERRY HEATHER
Classic Thermal Merino Base Layer Bottom Plus Boxed (Women's)
 BLUEBERRY HILL HEATH
Classic Thermal Merino Base Layer Bottom Plus Boxed (Women's)
Quick buy
SMARTWOOL
Classic All-Season Merino Base Layer Bottom Boxed Plus (Women's) - SW016911
$110.00
1X 2X 3X
BLACK
Classic All-Season Merino Base Layer Bottom Boxed Plus (Women's) - SW016911
Quick buy
SMARTWOOL
Classic All-Season Merino Base Layer Bottom Boxed (Men's) - SW016959
From $110.00
S M L XL 2XL
BLACK
Classic All-Season Merino Base Layer Bottom Boxed (Men's) - SW016959
Quick buy
SMARTWOOL
Classic All-Season Merino Lace Base Layer Bottom Boxed (Women's) - SW016625
From $65.00 $105.00
Sale
XS S M L XL
BLACK
Classic All-Season Merino Lace Base Layer Bottom Boxed (Women's) - SW016625
Quick buy
SWIX
RaceX Bodyw Pants (Men's)
$70.00
S M L XL 2XL
BRIGHT WHITE
RaceX Bodyw Pants (Men's)
 GREY MELANGE
RaceX Bodyw Pants (Men's)
Quick buy
SMARTWOOL
Intraknit™ Thermal Merino Base Layer Bottom (Men's) - SW016829
$150.00
S M L XL 2XL
BLACK-WHITE
Intraknit™ Thermal Merino Base Layer Bottom (Men's) - SW016829
Quick buy
SMARTWOOL
Intraknit™ Thermal Merino Base Layer Bottom (Women's) - SW016828
$150.00
XS S M L XL
BLACK CHERRY-VIOLET
Intraknit™ Thermal Merino Base Layer Bottom (Women's) - SW016828
 BLACK-WHITE
Intraknit™ Thermal Merino Base Layer Bottom (Women's) - SW016828
 BLUEBERRY HILL
Intraknit™ Thermal Merino Base Layer Bottom (Women's) - SW016828
Quick buy
SMARTWOOL
Intraknit™ Thermal Merino Base Layer 3/4 Bottom (Men's) - SW016825
$140.00
M L XL
BLACK-WHITE
Intraknit™ Thermal Merino Base Layer 3/4 Bottom (Men's) - SW016825
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer Pattern Bottom Boxed (Women's) - Past Season
$80.00 $130.00
Sale
S M L XL XS
BLUEBERRY HILL MARBL
Classic Thermal Merino Base Layer Pattern Bottom Boxed (Women's) - Past Season
 BLACK DOT
Classic Thermal Merino Base Layer Pattern Bottom Boxed (Women's) - Past Season
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
SMARTWOOL
Classic Thermal Merino Base Layer 3/4 Bottom Boxed (Men's)
$125.00
M L XL 2XL
BLACK
Classic Thermal Merino Base Layer 3/4 Bottom Boxed (Men's)
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer 3/4 Bottom Boxed (Women's)
$110.00
S M L
BLACK
Classic Thermal Merino Base Layer 3/4 Bottom Boxed (Women'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
WOOLPOWER
400 Long Johns
$94.05 $156.75
Sale
S M L XL 2XL
BLACK
400 Long Johns
Quick buy
ARC'TERYX
Rho LT Bottom (Men's)
From $110.00
S M L XL 2XL
PYTHEAS
Rho LT Bottom (Men's)
 BLACK
Rho LT Bottom (Men's)
Quick buy
ICEBREAKER
BodyfitZone™ Merino 260 Zone 3/4 Thermal Leggings (Women's) - Past Season
$85.00 $135.00
Sale
S M
JET HTHR-BLACK
BodyfitZone™ Merino 260 Zone 3/4 Thermal Leggings (Women's) - Past Season
Quick buy
RAB
Power Stretch Pro Pant (Women's)
$150.00
8 10 12 14 16
BLACK
Power Stretch Pro Pant (Women's)
Quick buy
THE NORTH FACE
Warm Winter Tight (Girls') - Past Season
$40.00 $69.99
Sale
S M L XS
VANADIS GREY
Warm Winter Tight (Girls') - Past Season
Quick buy
ICEBREAKER
Merino 260 Tech Thermal Leggings (Women's)
$150.00
S M L XL
BLACK
Merino 260 Tech Thermal Leggings (Women's)
Quick buy
ICEBREAKER
Merino 175 Everyday Thermal Leggings (Women's)
$100.00
XS S M L XL
BLACK
Merino 175 Everyday Thermal Leggings (Women's)
Quick buy
ICEBREAKER
BodyfitZone™ Merino 150 Zone Thermal Leggings (Women's) - Past Season
$70.00 $120.00
Sale
XS S M L XL
BLACK-MINERAL
BodyfitZone™ Merino 150 Zone Thermal Leggings (Women's) - Past Season
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer Bottom Boxed (Men's) - SW016362
$140.00
S M L XL 2XL
BLACK
Classic Thermal Merino Base Layer Bottom Boxed (Men's) - SW016362
 CHARCOAL HEATHER
Classic Thermal Merino Base Layer Bottom Boxed (Men's) - SW016362
 DEEP NAVY
Classic Thermal Merino Base Layer Bottom Boxed (Men's) - SW016362
 WINTER MOSS HEATHER
Classic Thermal Merino Base Layer Bottom Boxed (Men's) - SW016362
+ 1 more
Quick buy
RAB
Power Stretch Pro Pants (Men's)
$150.00
S M L XL 2XL
BLACK
Power Stretch Pro Pants (Men's)
Quick buy
HELLY HANSEN
LIFA® Merino Midweight Base Layer Set (Juniors')
$140.00
8 10 12 14 16
DEEP DIVE
LIFA® Merino Midweight Base Layer Set (Juniors')
 ULTRA BLUE
LIFA® Merino Midweight Base Layer Set (Juniors')
 GREY
LIFA® Merino Midweight Base Layer Set (Juniors')
 NAVY
LIFA® Merino Midweight Base Layer Set (Juniors')
+ 1 more
Quick buy
ICEBREAKER
Merino 200 Oasis Leggings with Fly (Men's)
$130.00
S M L XL 2XL 3XL
BLACK
Merino 200 Oasis Leggings with Fly (Men's)
Quick buy
ICEBREAKER
Merino 200 Oasis Thermal Leggings (Women's)
$130.00
XS S M L XL
GRITSTONE HEATHER
Merino 200 Oasis Thermal Leggings (Women's)
 BLACK
Merino 200 Oasis Thermal Leggings (Women's)
Quick buy
SUGOI
RC Pro Liner (Women's)
$103.99
XS S M L XL
BLACK
RC Pro Liner (Women's)
Quick buy
SWIX
RaceX BodyW Boxer Wind (Men's)
$80.00
S M L XL
BLACK
RaceX BodyW Boxer Wind (Men's)
Quick buy
SWIX
RaceX Bodywear Pants Wind (Women's)
$65.00
S M L
BLACK
RaceX Bodywear Pants Wind (Women's)
Quick buy
OUTDOOR RESEARCH
Vigor Bottoms (Women's)
From $70.00 $104.95
Sale
S M L XL
BLACK
Vigor Bottoms (Women's)
Quick buy
OUTDOOR RESEARCH
Vigor Bottoms (Men's)
$70.00 $104.95
Sale
S M 2XL
BLACK
Vigor Bottoms (Men's)
Quick buy
SUGOI
RC Pro Liner (Men's)
$109.99
S M L XL XXL
BLACK
RC Pro Liner (Men's)
Quick buy
SMARTWOOL
Merino 150 Baselayer Bottom Boxed (Women's) - Past Season
$70.00 $110.00
Sale
S M L
BLACK
Merino 150 Baselayer Bottom Boxed (Women's) - Past Season
Quick buy
SMARTWOOL
Classic Thermal Merino Base Layer Bottom Boxed (Women's) - SW018809
From $80.00 $140.00
Sale
XS S M L XL
ULTRA VIOLET
Classic Thermal Merino Base Layer Bottom Boxed (Women's) - SW018809
 CHARCOAL HEATHER
Classic Thermal Merino Base Layer Bottom Boxed (Women's) - SW018809
 BLACK
Classic Thermal Merino Base Layer Bottom Boxed (Women's) - SW018809
 BLACK DOT
Classic Thermal Merino Base Layer Bottom Boxed (Women's) - SW018809
 VIOLET FLIRT WITH ME
Classic Thermal Merino Base Layer Bottom Boxed (Women's) - SW018809
 TWILIGHT BLUE HEATHER
Classic Thermal Merino Base Layer Bottom Boxed (Women's) - SW018809
 LIGHT GREY HEATHER
Classic Thermal Merino Base Layer Bottom Boxed (Women's) - SW018809
 BLACK CHERRY HEATHER
Classic Thermal Merino Base Layer Bottom Boxed (Women's) - SW018809
+ 5 more
Quick buy
SMARTWOOL
Intraknit™ Thermal Merino Base Layer 3/4 Bottom (Women's) - SW016826
$140.00
Sold out
S M L
BLACK-WHITE
Intraknit™ Thermal Merino Base Layer 3/4 Bottom (Women's) - SW016826