Free shipping on 100 €

Free return under 100 days

Expert Help

Schedule an appointment

+33 1 84 67 14 24

Login

My account

Cycling Clothing
Cycling base layers
Undershorts

Cycling & MTB Undershorts

(29)

Sort by

29 Results

Filter

Cycling base layers

Cycling technical base layers

Cycling thermal base layers

Men

Women

Alpine Stars

Assos

Castelli

Craft

Endura

Fox Racing

Giro

ION

Karpos

Mavic

Northwave

Poc

Vaude

Mountain Bike

Cyclotourism

Enduro

Gravel

Road bike

Cycling

0€ - 25€

25€ - 50€

50€ - 75€

75€ - 100€

125€ - 150€

0% - 10%

10% - 20%

20% - 30%

30% - 40%

+ 50%

Recycled

PFC-Free

Oeko-Tex

Bluesign™

Fair Wear Foundation

Green Shape

Summer

Spring

Shorts

Cycling shorts

Base layer shorts

Sort by

PocRe-cycle Boxer - MTB Undershorts - Men's

EnduraPadded Clickfast Liner - MTB Undershorts - Men's

IONIn-Shorts - MTB Undershorts - Men's79,90 €

AssosTrail Tactica Liner Shorts HP T3 - MTB Undershorts - Men's149,90 €

Fox RacingTecbase Liner Short - MTB Undershorts - Men's

VaudeBike Innerpants XP - MTB Undershorts - Men's79,90 €

Alpine StarsInner Shorts Pro V2 - MTB Undershorts

PocRe-cycle Boxer - MTB Undershorts - Women's

VaudeBike Innerpants XP - MTB Undershorts - Women's79,90 €

Alpine StarsAlps Inner Shorts - MTB Undershorts - Men's

KarposPro-Tech Inner Shorts - MTB Undershorts - Women's

CraftGreatness Bike Shorts - MTB Undershorts - Women's59,90 €

NorthwaveSport 2 Woman Inner Short - MTB Undershorts - Women's

NorthwavePro Woman Inner Short - MTB Undershorts - Women's44,90 €

EnduraEngineered Padded Boxer with Clickfast - MTB Undershorts - Women's44,90 €

EnduraEngineered Padded Boxer - MTB Undershorts - Women's39,90 €

EnduraPadded Liner II - MTB Undershorts - Men's34,90 €

EnduraPadded Liner - MTB Undershorts - Women's34,90 €

VaudeBike Innerpants III - MTB Undershorts - Men's44,90 €

PocSynovia VPD Shorts - MTB Undershorts

VaudeWomen's Bike Innerpants III - MTB Undershorts - Women's

GiroBase Liner Bib Short - MTB Undershorts - Men's

CastelliTrail Liner - MTB Undershorts - Men's

CastelliTrail W Liner - MTB Undershorts - Women's

PocInfinite All-mountain Shorts - MTB Undershorts - Women's

PocInfinite All-mountain Shorts - MTB Undershorts - Women's

PocInfinite All-mountain Shorts - MTB Undershorts - Women's

MavicTrail Liner Short - MTB Undershorts - Men's

MavicTrail Liner Graphic Short - MTB Undershorts - Men's

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

Need Help?

To choose your waterproof jacket, your trail shoes or to modify an order, contact our HardGuides!

Write to us!

Keep in touch

Be the first to discover our new products, exclusive sales, adventure ideas & tips, and get £5 off your next order

E-mail adress

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

Track my order
Size Charts & Fit Guide

Hardloop

Who are we?
HardGuides

Carbon neutral since 2015

Our Footprint
Carbon neutrality
HardGreen selection

Logistics partner

100% secured payment system

Easy Online Shopping

Free delivery from 100 €
100 Days refund policy

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

More adventures

Hardloop International