Men's Active Underwear & Baselayers

Smartwool

Classic All-Season Merino Base Layer - Men's

2 colors

Current price: $67.50 Original price: $90.00

25% off

Ships Free Through 9/30

Smartwool

Intraknit Active Base Layer Crew - Men's

1 color

Current price: $66.00 Original price: $110.00

40% off

Ships Free Through 9/30

Patagonia

Capilene Midweight Crew Top - Men's

2 colors

Current price: $44.50 Original price: $89.00

50% off

Ships Free Through 9/30

(6)

Icebreaker

200 Oasis LS Crew Top - Men's

4 colors

Current price: $57.75 - $78.75 Original price: $105.00

Up to 45% off

Ships Free Through 9/30

(49)

Patagonia

R1 Air Zip-Neck Top - Men's

4 colors

Current price: $77.40 - $83.85 Original price: $129.00

Up to 40% off

Ships Free Through 9/30

(16)

Patagonia

R1 Thermal Crew - Men's

2 colors

Current price: $89.50 Original price: $179.00

50% off

Ships Free Through 9/30

Icebreaker

Merino Blend 125 ZoneKnit Long-Sleeve Crewe - Men's

1 color

Current price: $62.50 Original price: $125.00

50% off

Ships Free Through 9/30

BlackStrap

Therma Hooded Baselayer Top 2024

1 color

Current price: $36.00 Original price: $89.99

60% off

Ships Free Through 9/30

Black Diamond

Coefficient LT 1/4-Zip Pullover - Men's

1 color

Current price: $85.05 Original price: $189.00

55% off

Ships Free Through 9/30

ExOfficio

Give-N-Go Boxer - 2-Pack - Men's

1 color

Current price: $22.50 Original price: $50.00

55% off

Ships Free Through 9/30

ExOfficio

Everyday Boxer Brief - Men's

3 colors

Current price: $11.98 - $19.47 Original price: $29.95

Up to 60% off

Ships Free Through 9/30

Under Armour

Packaged Base 4.0 Legging - Men's

1 color

Current price: $64.99 Original price: $99.99

35% off

Ships Free Through 9/30

Under Armour

Packaged Base 4.0 1/4-Zip Top - Men's

1 color

Current price: $65.99 Original price: $109.99

40% off

Ships Free Through 9/30

Icebreaker

200 Oasis Fly Legging - Men's

2 colors

Current price: $78.75 Original price: $105.00

25% off

Ships Free Through 9/30

Outdoor Research

Alpine Onset Bottom - Men's

3 colors

Current price: $22.24 - $35.58 Original price: $88.95

Up to 75% off

Ships Free Through 9/30

Rab

Conduit Crew - Men's

2 colors

Current price: $41.25 Original price: $75.00

45% off

Ships Free Through 9/30

The North Face

Summit DotKnit Tight - Men's

2 colors

Current price: $35.55 Original price: $79.00

55% off

Ships Free Through 9/30

(22)

Atomic

Revent Primaloft Midlayer - Men's 2022

1 color

Current price: $90.00 Original price: $300.00

70% off

Ships Free Through 9/30

ExOfficio

Give-N-Go 2.0 Boxer Brief - Men's

1 color

Current price: $16.87 Original price: $25.95

35% off

Ships Free Through 9/30

Terramar

Thermapeak Crew - Men's

1 color

Current price: $16.50 Original price: $30.00

45% off

Smartwool

Merino 250 Baselayer Crew - Men's

1 color

Current price: $81.25 Original price: $115.00

29% off

Ships Free Through 9/30

(20)

Le Bent

Fractal Lightweight Bottom 2025

1 color

Current price: $36.00 Original price: $120.00

70% off

Ships Free Through 9/30

Under Armour

Packaged Base 3.0 Crew Top - Men's

1 color

Current price: $35.00 Original price: $69.99

50% off

Ships Free Through 9/30

Ortovox

185 Rock'N'Wool Long-Sleeve Top - Men's

3 colors

Current price: $66.00 Original price: $110.00

40% off

ExOfficio

Everyday Boxer - Men's

4 colors

Current price: $11.98 - $19.47 Original price: $29.95

Up to 60% off

Ships Free Through 9/30

Outdoor Research

Echo Boxer Briefs - Men's

2 colors

Current price: $22.36 Original price: $31.95

30% off

Ships Free Through 9/30

Patagonia

R1 Air Crew Top - Men's

1 color

Current price: $68.99 Original price: $99.00

30% off

Smartwool

Intraknit Active Base Layer Bottom - Men's

1 color

Current price: $71.50 Original price: $110.00

35% off

Ships Free Through 9/30

Ortovox

185 Rock'N'Wool Short Pant - Men's

4 colors

Current price: $60.00 Original price: $100.00

40% off

ExOfficio

Everyday Brief - Men's

2 colors

Current price: $16.87 Original price: $25.95

35% off

Ships Free Through 9/30

ExOfficio

Give-N-Go 2.0 Boxer Brief - Men's

1 color

Current price: $19.47 Original price: $29.95

35% off

Ships Free Through 9/30

Icebreaker

Merino Blend 125 ZoneKnit Legging - Men's

1 color

Current price: $62.50 Original price: $125.00

50% off

Ships Free Through 9/30

Mammut

Aenergy FL Long-Sleeve - Men's

1 color

Current price: $53.40 Original price: $89.00

40% off

Ships Free Through 9/30

The North Face

Sunriser Hoodie - Men's

3 colors

Current price: $42.00 - $49.00 Original price: $70.00

Up to 40% off

Ships Free Through 9/30

Ortovox

185 Rock'N'Wool Boxer - Men's

3 colors

Current price: $42.00 - $45.50 Original price: $70.00

Up to 40% off

Icebreaker

Merino Blend 75 Cool-Lite Ultralight SS Crewe - Men's

1 color

Current price: $50.00 Original price: $100.00

50% off

Ships Free Through 9/30

Icebreaker

Merino 260 Tech Long-Sleeve 1/2-Zip Top - Men's

1 color

Current price: $101.25 Original price: $135.00

25% off

Ships Free Through 9/30

Duck Camp

Barnburner 1/4-Zip Top - Men's

3 colors

Current price: $101.37 - $107.37 Original price: $178.95

40% off

Ships Free Through 9/30

Icebreaker

Merino 125 Cool-Lite Anatomica Boxer - Men's

1 color

Current price: $30.00 Original price: $50.00

40% off

Swix

RaceX Classic Long-Sleeve Top - Men's

2 colors

Current price: $32.97 - $41.21 Original price: $54.95

Up to 40% off

Ships Free Through 9/30

Mountain Hardwear

Kor Alloy Tight - Men's

1 color

Current price: $129.99 Original price: $199.99

35% off

Ships Free Through 9/30

The North Face

Sunriser 1/4-Zip Top - Men's

1 color

Current price: $48.00 Original price: $80.00

40% off

Ships Free Through 9/30

Men's Underwear & Baselayers

Brand

Clothing Size

S (47)

M (40)

L (38)

XL (33)

XXL (30)

39 (16)

28 (14)

42 (14)

40 (13)

31 (10)

32 (2)

35 (2)

44 (1)

XS (1)

Color

Sale

10% and more (109)

20% and more (109)

30% and more (97)

40% and more (70)

50% and more (36)

Price

$0 - $49.99 (48)

$50 - $99.99 (53)

$100 - $199.99 (7)

$200 - $499.99 (1)

Features

Anti-Odor (65)

Thumbholes (20)

Sun Protection (15)

Pockets (13)

Abrasion Resistant (10)

Thermal (2)

Reflective (1)

Material

Synthetic (79)

Wool (52)

Cotton Blend (1)

Recommended Use

All-Mountain Skiing (69)

All-Mountain Snowboarding (68)

Backcountry Skiing (54)

Backcountry Snowboarding (53)

Hiking (47)

Freeride/Powder Skiing (41)

Freeride/Powder Snowboarding (40)

Casual (36)

Backcountry Snowshoeing (31)

Park & Freestyle Skiing (28)

Park & Freestyle Snowboarding (27)

Backpacking (26)

Trail Running (26)

Road Running (23)

Snowshoe Hiking (17)

Fit

Semi-Fitted/Slim (43)

Regular/Relaxed (30)

Form-Fitting (21)

Compressive (1)

Insulation Weight

Midweight (39)

Lightweight (35)

Heavyweight (3)

Shirt Style

Crew (37)

Mock-Neck (15)

Hoodie (5)

One-Piece Suit (3)

Full-Zip (2)

Sleeve Length

Long-Sleeve (58)

Short-Sleeve (3)

Cut

Boxer Brief (6)

Boxer (4)

Brief (1)

Classic All-Season Merino Base Layer - Men's