Skip to main content

Free return under 100 days

Free shipping on £150

Expert Help

Schedule an appointment

+33 1 84 67 14 24

Login

My account

Men's
Men's Outdoor Clothing
Men's Sports Underwear

Men's Sports Underwear

(776)

Sort by

776 Results

Filter

Sports underwear

Neoprene tops and jackets

Hoodies & jumpers

Gloves & mittens

Men's Capri pants

Men's Ski suits

Men's Cycling skinsuits

Neoprene wetsuits

Men

Women

7mesh

Alpine Stars

Black Diamond

Bogner Fire + Ice

BV Sport

Carinthia

Castelli

CEP

CMP

Columbia

Craft

Dale of Norway

Devold

Endura

Falke

Ferrino

GripGrab

Haglöfs

Helly Hansen

Houdini Sportswear

icebreaker

ION

Karpos

La Sportiva

Maap

Maloja

Mammut

Millet

Mizuno

Mons Royale

Mountain Hardwear

Musto

Northwave

Oakley

Ortovox

Outdoor Research

Oxbow

PAG Neckwear

Patagonia

Poc

Protest

Quiksilver

Rab

Roa Hiking

Rossignol

Saxx

Scott

Smartwool

Sportful

Superdry

The North Face

Vaude

Woolpower

X-Bionic

Zoggs

£0 - £25

£25 - £50

£50 - £75

£75 - £100

£100 - £125

£125 - £150

Climbing

Running

Travel

Mountaineering

Cyclotourism

Cross Country Skiing

Recycled

Green Shape

Grüner Knopf

Ecomaterial

Re-Source

Origine Européenne Garantie

T-shirt

Technical jersey

Débardeur

Boxer shorts

Thermal jersey

Collant thermique

0% - 10%

10% - 20%

20% - 30%

30% - 40%

40% - 50%

+ 50%

Yes

No

Sleeveless

Short

Long

Polygiene®

Breath Thermo®

HeiQ Fresh

lifa® stay warm

Breath Thermo®

Capilene®

Sort by

Daytripper Comfort Stretch Boxer Brief Fly - Underwear - Men's

SaxxDaytripper Comfort Stretch Boxer Brief Fly - Underwear - Men's£25,90

Essential Cotton Boxer Brief Fly - Underwear - Men's

SaxxEssential Cotton Boxer Brief Fly - Underwear - Men's£20,90

Daytripper Comfort Stretch Boxer Brief Fly - Underwear - Men's

SaxxDaytripper Comfort Stretch Boxer Brief Fly - Underwear - Men's£25,90

Daytripper Comfort Stretch Boxer Brief Fly - Underwear - Men's

SaxxDaytripper Comfort Stretch Boxer Brief Fly - Underwear - Men's£25,90

Sonic LS Zip - Base layer - Men's

RabSonic LS Zip - Base layer - Men's£41,90

Boxer Evo Light - Underwear - Men's

BV SportBoxer Evo Light - Underwear - Men's£31,90

Legging Artic Merinos - Merino base layer - Men's

BV SportLegging Artic Merinos - Merino base layer - Men's£71,90

Haut Technique Artic Merinos - Merino Wool Jersey - Men's

BV SportHaut Technique Artic Merinos - Merino Wool Jersey - Men's£71,90

Boxer Evo Light - Underwear - Men's

BV SportBoxer Evo Light - Underwear - Men's£31,90

Boxer R-Tech V2 - Underwear - Men's

BV SportBoxer R-Tech V2 - Underwear - Men's£31,90

Active Ultralite Long Sleeve - Merino Wool Jersey - Men's

SmartwoolActive Ultralite Long Sleeve - Merino Wool Jersey - Men's£64,90

175 Everyday Boxers wFly - Merino Wool Boxer

icebreaker175 Everyday Boxers wFly - Merino Wool Boxer£44,90

175 Everyday LS Half Zip - Merino Wool Jersey - Men's

icebreaker175 Everyday LS Half Zip - Merino Wool Jersey - Men's£79,90

PlaneM. NOS - Underwear - Men's

MalojaPlaneM. NOS - Underwear - Men's£85,90

Trunk Triple Pack - Underwear - Men's

SuperdryTrunk Triple Pack - Underwear - Men's£35,90

Trunk Triple Pack - Underwear - Men's

SuperdryTrunk Triple Pack - Underwear - Men's£35,90

Trunk Triple Pack - Underwear - Men's

SuperdryTrunk Triple Pack - Underwear - Men's£35,90

Trunk Triple Pack - Underwear - Men's

SuperdryTrunk Triple Pack - Underwear - Men's£35,90

Boxer Triple Pack - Underwear - Men's

SuperdryBoxer Triple Pack - Underwear - Men's£35,90

Boxer Triple Pack - Underwear - Men's

SuperdryBoxer Triple Pack - Underwear - Men's£35,90

Boxer Triple Pack - Underwear - Men's

SuperdryBoxer Triple Pack - Underwear - Men's£35,90

Boxer Triple Pack - Underwear - Men's

SuperdryBoxer Triple Pack - Underwear - Men's£35,90

Layer Merino 3/4 Tights - Base layer - Men's

PocLayer Merino 3/4 Tights - Base layer - Men's£89,90

Foundation Boxer Brief Men's - Underwear - Men's

7meshFoundation Boxer Brief Men's - Underwear - Men's£44,90

Suyen - Merino wool Thermal Tight - Men's

OxbowSuyen - Merino wool Thermal Tight - Men's£50,90

Bazillac - Merino wool Thermal Tight - Men's

OxbowBazillac - Merino wool Thermal Tight - Men's£71,90

Active Comfort LS 2 - Base layer - Men's

CraftActive Comfort LS 2 - Base layer - Men's£44,90

Signature Merino 230 Zip - Merino Wool Jersey - Men's

DevoldSignature Merino 230 Zip - Merino Wool Jersey - Men's£134,90

Duo Active Merino 205 Shirt - Merino Wool Jersey - Men's

DevoldDuo Active Merino 205 Shirt - Merino Wool Jersey - Men's£71,90

Duo Active Merino 205 3/4 Longs - Merino wool Thermal Tight - Men's

DevoldDuo Active Merino 205 3/4 Longs - Merino wool Thermal Tight - Men's£62,90

Lauparen Merino 190 Base Shirt - Merino Wool Jersey - Men's

DevoldLauparen Merino 190 Base Shirt - Merino Wool Jersey - Men's£62,90

Duo Active Merino 205 Boxer - Merino Wool Boxer

DevoldDuo Active Merino 205 Boxer - Merino Wool Boxer£35,90

Breeze Plus Merino 200 3/4 Longs - Merino wool Thermal Tight - Men's

DevoldBreeze Plus Merino 200 3/4 Longs - Merino wool Thermal Tight - Men's£80,90

Duo Active Merino 205 Zip Neck - Merino Wool Jersey - Men's

DevoldDuo Active Merino 205 Zip Neck - Merino Wool Jersey - Men's£80,90

Carline Soft LS Tee - Base layer - Men's

MilletCarline Soft LS Tee - Base layer - Men's£62,90

Carline Soft 3/4 Tight - Base layer - Men's

MilletCarline Soft 3/4 Tight - Base layer - Men's£53,90

Carline Soft LS 1/2 Zip - Base layer - Men's

MilletCarline Soft LS 1/2 Zip - Base layer - Men's£71,90

Tyri Knit Hoodie - Base layer - Men's

Helly HansenTyri Knit Hoodie - Base layer - Men's£80,90

Tyri Knit 1/2 Zip - Base layer - Men's

Helly HansenTyri Knit 1/2 Zip - Base layer - Men's£80,90

Tyri Knit 1/2 Zip - Base layer - Men's

Helly HansenTyri Knit 1/2 Zip - Base layer - Men's£80,90

HH Tech T-Shirt 2.0 - Base layer - Men's

Helly HansenHH Tech T-Shirt 2.0 - Base layer - Men's£26,90

HH Tech T-Shirt 2.0 - Base layer - Men's

Helly HansenHH Tech T-Shirt 2.0 - Base layer - Men's£26,90

Dinamico Merino 130 T-Shirt - Merino base layer - Men's

KarposDinamico Merino 130 T-Shirt - Merino base layer - Men's£79,90

Dinamico Merino 130 Jersey LS - Merino base layer - Men's

KarposDinamico Merino 130 Jersey LS - Merino base layer - Men's£94,90

Dinamico Merino 130 Tights - Merino base layer - Men's

KarposDinamico Merino 130 Tights - Merino base layer - Men's£80,90

Dinamico Merino 180 Tights - Merino base layer - Men's

KarposDinamico Merino 180 Tights - Merino base layer - Men's£91,90

185 Rock'N'Wool Short Pants - Leggings - Men's

Ortovox185 Rock'N'Wool Short Pants - Leggings - Men's£89,90

Ravine Metawool 60 Hybrid Pants - Merino wool Thermal Tight - Men's

OrtovoxRavine Metawool 60 Hybrid Pants - Merino wool Thermal Tight - Men's£197,90

120 Comp Light Shorts - Merino Wool Boxer

Ortovox120 Comp Light Shorts - Merino Wool Boxer£58,90

Invent 4.0 Lt Boxer Shorts - Underwear - Men's

X-BionicInvent 4.0 Lt Boxer Shorts - Underwear - Men's£40,90

Energy Accumulator Light Shirt LS - Base layer - Men's

X-BionicEnergy Accumulator Light Shirt LS - Base layer - Men's£139,90

Spruce Wool LS Base Layer - Base layer - Men's

OakleySpruce Wool LS Base Layer - Base layer - Men's£103,90

Endurance Merino Base Layer - Base layer - Men's

OakleyEndurance Merino Base Layer - Base layer - Men's£80,90

Endurance Merino Base Layer - Base layer - Men's

OakleyEndurance Merino Base Layer - Base layer - Men's£80,90

Rewill 1/4 Zip Top - Base layer - Men's

ProtestRewill 1/4 Zip Top - Base layer - Men's£40,90

Zion Thermo - Base layer - Men's

ProtestZion Thermo - Base layer - Men's£40,90

Latnja Wool 3/4 Pant - Merino wool Thermal Tight - Men's

HaglöfsLatnja Wool 3/4 Pant - Merino wool Thermal Tight - Men's£74,90

Latnja Wool Crew Neck - Merino base layer - Men's

HaglöfsLatnja Wool Crew Neck - Merino base layer - Men's£84,90

Monviso Wool Tights II - Base layer - Men's

VaudeMonviso Wool Tights II - Base layer - Men's£98,90

Monviso Wool LS T-Shirt II - Base layer - Men's

VaudeMonviso Wool LS T-Shirt II - Base layer - Men's£89,90

1
...
5
6
7
8
9
10
11
...
13

Our top brands

Patagonia Ortovox Rab La Sortiva Lowa Altra Millet Moon Boot Helly Hansen Barbour Fjällräven Columbia Scarpa Vaude Mammut Julbo New Balance Hanwag Birkenstock Petzl

Our top trending categories

Women's Down jackets Women's Parkas Women's Fleece jackets Men's Down jackets Men's Parkas Men's Fleece jackets Tents Sleeping pads Headlamps Sleeping bags Stoves Hiking backpacks Ice axes Hiking shoes & boots Trail running shoes Running shoes Climbing shoes Kids' Hiking shoes & boots Cycling helmets Kids' carriers Kids' Clothing Kids' Fleece jackets Aigle Kids' Rain shoes Patagonia Fleece jackets Pyrenex Down jackets Helly Hansen Jackets Columbia Fleece jackets Black Diamond Headlamps Meindl Shoes Dakine Backpacks Assos Cycling shorts Giro Helmets Rab Down jackets Dog Harnesses Dog Leads & Leashes Ortlieb Panniers Altra Shoes Buff Neckwear Abus Cycling helmets Patagonia Down Jackets

Free shipping on £150Free return under 100 daysCarbon neutral

Our mission

At Hardloop, we believe that nature and being on the move should be at the very heart of our lives. Whether you're a first-timer or a top athlete, since 2015 we've been sharing with you our love of good gear and our passion for the steep trails we love to run around on.

Read more +

Customer Service

All help topics
Track my order
Return & refund
Size Charts & Fit Guide

Hardloop

Who are we?
HardGuides

Our commitments

Our Footprint
Second hand
HardGreen selection

Logistics partner

100% secured payment system

Easy Online Shopping

Free delivery from £150
100 Days refund policy
Customer service free of charge

© Hardloop 2026
Legal Notice
Terms of Use
Privacy Policy & Data Tracking
Data preferences

More adventures

Hardloop International