Men's Active Underwear & Baselayers

Outdoor Research

Echo Boxer Briefs - Men's

4 colors

Current price: $15.98 - $17.57 Original price: $31.95

Up to 50% off

Extra $40 Off Orders $200+ | Ends 9/29

ExOfficio

Everyday Boxer - Men's

2 colors

Current price: $11.98 Original price: $29.95

60% off

Extra $40 Off Orders $200+ | Ends 9/29

ExOfficio

Everyday Boxer Brief - Men's

3 colors

Current price: $14.98 - $16.47 Original price: $29.95

Up to 50% off

Extra $40 Off Orders $200+ | Ends 9/29

Helly Hansen

Lifa Merino Midweight Crew Top - Men's

3 colors

Current price: $50.00 - $68.25 Original price: $105.00

Up to 50% off

Extra $40 Off Orders $200+ | Ends 9/29

(1)

Smartwool

Merino 250 Baselayer Crew Boxed Top - Men's

1 color

Current price: $63.25 Original price: $115.00

45% off

Extra $40 Off Orders $200+ | Ends 9/29

The North Face

Elevation 1/4-Zip Top - Men's

4 colors

Current price: $30.00 - $34.97 Original price: $50.00

Up to 40% off

Extra $40 Off Orders $200+ | Ends 9/29

Mammut

Trift Half-Zip Long-Sleeve Top - Men's

1 color

Current price: $64.50 Original price: $129.00

50% off

Extra $40 Off Orders $200+ | Ends 9/29

Smartwool

Intraknit Thermal Max Merino 1/4-Zip Baselayer Top - Men's

1 color

Current price: $85.25 Original price: $155.00

45% off

Extra $40 Off Orders $200+ | Ends 9/29

Icebreaker

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

2 colors

Current price: $87.75 Original price: $135.00

35% off

Extra $40 Off Orders $200+ | Ends 9/29

Swix

Tista 1/2-Zip Mid Layer Top - Men's

2 colors

Current price: $44.97 - $48.72 Original price: $74.95

Up to 40% off

Extra $40 Off Orders $200+ | Ends 9/29

Icebreaker

200 Oasis Fly Legging - Men's

1 color

Current price: $68.25 Original price: $105.00

35% off

Extra $40 Off Orders $200+ | Ends 9/29

Mammut

Trift Long Tights - Men's

1 color

Current price: $68.75 Original price: $125.00

45% off

Extra $40 Off Orders $200+ | Ends 9/29

Airblaster

Ninja Suit - Men's

1 color

Current price: $67.48 Original price: $149.95

55% off

Extra $40 Off Orders $200+ | Ends 9/29

Le Bent

Lightweight Crew - Men's

1 color

Current price: $87.71 Original price: $116.95

25% off

Extra $40 Off Orders $200+ | Ends 9/29

Helly Hansen

Lifa Merino Midweight 1/2 Zip Top - Men's

1 color

Current price: $74.75 Original price: $115.00

35% off

Extra $40 Off Orders $200+ | Ends 9/29

(1)

Rab

Basecamp Logo Badge Long-Sleeve T-Shirt - Men's

3 colors

Current price: $27.30 Original price: $42.00

35% off

Extra $40 Off Orders $200+ | Ends 9/29

Backcountry

BGA Pines Microgrid Ultra-LT Baselayer Crew Top - Men's

1 color

Current price: $49.50 Original price: $99.00

50% off

Extra $40 Off Orders $200+ | Ends 9/29

La Sportiva

Tour Long-Sleeve Top - Men's

1 color

Current price: $47.40 Original price: $79.00

40% off

Extra $40 Off Orders $200+ | Ends 9/29

Swix

Tista Pull-Over Hoodie - Men's

2 colors

Current price: $41.97 Original price: $69.95

40% off

Extra $40 Off Orders $200+ | Ends 9/29

The North Face

A68A Circular DotKnit Tight - Men's

1 color

Current price: $60.00 Original price: $100.00

40% off

Extra $40 Off Orders $200+ | Ends 9/29

Swix

Heat Wool Tight - Men's

1 color

Current price: $64.97 Original price: $99.95

35% off

Extra $40 Off Orders $200+ | Ends 9/29

Swix

Tista Crew Neck Mid Layer Top - Men's

1 color

Current price: $44.97 Original price: $74.95

40% off

Extra $40 Off Orders $200+ | Ends 9/29

Rab

Conduit Pull-On Top - Men's

1 color

Current price: $55.25 Original price: $85.00

35% off

Extra $40 Off Orders $200+ | Ends 9/29

Rab

Conduit Crew - Men's

1 color

Current price: $48.75 Original price: $75.00

35% off

Extra $40 Off Orders $200+ | Ends 9/29

Mons Royale

Cascade 3/4 Legging - Men's

1 color

Current price: $77.97 Original price: $119.95

35% off

Extra $40 Off Orders $200+ | Ends 9/29

(2)

Mountain Hardwear

Kor Alloy Tight - Men's

1 color

Current price: $100.00 Original price: $199.99

50% off

Extra $40 Off Orders $200+ | Ends 9/29

Le Bent

Midweight Crew - Men's

1 color

Current price: $95.96 Original price: $127.95

25% off

Extra $40 Off Orders $200+ | Ends 9/29

Le Bent

Lightweight 3/4 Bottom - Men's

1 color

Current price: $78.71 Original price: $104.95

25% off

Extra $40 Off Orders $200+ | Ends 9/29

Icebreaker

Merino Blend 300 RealFleece Descender LS Zip Top - Men's

1 color

Current price: $149.50 Original price: $230.00

35% off

Extra $40 Off Orders $200+ | Ends 9/29

Icebreaker

Merino 260 Quantum Long-Sleeve Zip Top - Men's

2 colors

Current price: $121.00 - $132.00 Original price: $220.00

Up to 45% off

Extra $40 Off Orders $200+ | Ends 9/29

Icebreaker

300 MerinoFine Polar Long-Sleeve Roll Neck Top - Men's

1 color

Current price: $143.00 Original price: $220.00

35% off

Extra $40 Off Orders $200+ | Ends 9/29

Icebreaker

300 MerinoFine Polar Long-Sleeve 1/2-Zip - Men's

2 colors

Current price: $162.50 Original price: $250.00

35% off

Extra $40 Off Orders $200+ | Ends 9/29

Icebreaker

260 Tech Long-Sleeve Crew Top - Men's

1 color

Current price: $81.25 Original price: $125.00

35% off

Extra $40 Off Orders $200+ | Ends 9/29

Helly Hansen

Lifa Merino Midw Blc Hoodie - Men's

1 color

Current price: $100.75 Original price: $155.00

35% off

Extra $40 Off Orders $200+ | Ends 9/29

Helly Hansen

Verglas 1/2-Zip Top - Men's

1 color

Current price: $51.00 Original price: $85.00

40% off

Extra $40 Off Orders $200+ | Ends 9/29

BlackStrap

Spectrum Full-Zip Top - Men's

2 colors

Current price: $103.97 - $111.96 Original price: $159.95

Up to 35% off

Extra $40 Off Orders $200+ | Ends 9/29

Backcountry

BGA Pines Microgrid Ultra-Lt Baselayer Bottom - Men's

1 color

Current price: $44.50 Original price: $89.00

50% off

Extra $40 Off Orders $200+ | Ends 9/29

Backcountry

BGA Pines Microgrid UL Baselayer 1/2-Zip Scuba Top - Men's

3 colors

Current price: $44.50 Original price: $89.00

50% off

Extra $40 Off Orders $200+ | Ends 9/29

Backcountry

BGA Cedars RWS Merino Mid-Wt Baselayer Bottom - Men's

2 colors

Current price: $49.50 Original price: $99.00

50% off

Extra $40 Off Orders $200+ | Ends 9/29

Backcountry

BGA Cedars RWS Merino Mid-Wt Baselayer 3/4 Bottom - Men's

1 color

Current price: $44.50 Original price: $89.00

50% off

Extra $40 Off Orders $200+ | Ends 9/29

Backcountry

BGA Cedars RWS Merino Lt-Wt Baselayer Crew Top - Men's

1 color

Current price: $62.30 Original price: $89.00

30% off

Extra $40 Off Orders $200+ | Ends 9/29

Backcountry

BGA Cedars RWS Merino Lt-Wt Baselayer Bottom - Men's

2 colors

Current price: $44.50 - $62.30 Original price: $89.00

Up to 50% off

Extra $40 Off Orders $200+ | Ends 9/29

Men's Underwear & Baselayers

Brand

Clothing Size

XS (1)

S (45)

M (26)

L (20)

XL (28)

XXL (24)

3XL (1)

25 (5)

28 (6)

29 (5)

31 (6)

32 (2)

35 (4)

39 (11)

40 (9)

42 (14)

US XXL/EU 3XL (2)

Color

Sale

10% and more (92)

20% and more (91)

30% and more (83)

40% and more (49)

50% and more (23)

Recommended Use

All-Mountain Skiing (51)

All-Mountain Snowboarding (51)

Hiking (43)

Backcountry Skiing (39)

Backcountry Snowboarding (38)

Casual (35)

Freeride/Powder Skiing (31)

Freeride/Powder Snowboarding (31)

Trail Running (31)

Park & Freestyle Skiing (28)

Park & Freestyle Snowboarding (28)

Road Running (28)

Backpacking (19)

Backcountry Snowshoeing (18)

Nordic Classic (17)

Fit

Semi-Fitted/Slim (42)

Regular/Relaxed (21)

Form-Fitting (16)

Compressive (1)

Price

$0 - $49.99 (29)

$50 - $99.99 (52)

$100 - $199.99 (10)

$200 - $499.99 (1)

Features

Anti-Odor (41)

Pockets (19)

Thumbholes (19)

Reflective (10)

Abrasion Resistant (7)

Thermal (5)

Stretch Fabric (3)

Sun Protection (3)

Adjustable Waist (1)

Split-Leg (1)

Water Resistant (1)

Material

Synthetic (66)

Wool (30)

Cotton (1)

Insulation

Fleece (4)

Wool (2)

Length

Short (4)

Mid-Thigh (3)

Long (1)

Insulation Weight

Midweight (26)

Lightweight (19)

Ultralight (4)