Free shipping on 100 €

Free return under 100 days

Expert Help

Schedule an appointment

+33 1 84 67 14 24

Login

My account

X-Bionic
Clothing
Underwear

X-Bionic Underwear for Men & Women

(22)

Sort by

22 Results

Filter

Sports-Bras & Briefs

Men

Women

X-Bionic

Ski Touring

Cross Country Skiing

Running

Winter sports

Trail running

Skiing

25€ - 50€

50€ - 75€

75€ - 100€

100€ - 125€

125€ - 150€

150€ - 200€

10% - 20%

20% - 30%

30% - 40%

No

Long

Top base layer

Sort by

Energy Accumulator 4.0 Shirt LG SL - Base layer - Women's

-5% Extra - Code Spring5

X-BionicEnergy Accumulator 4.0 Shirt LG SL - Base layer - Women's

Invent 4.0 Lt Shirt Sh SL - Base layer - Women's

-5% Extra - Code Spring5

X-BionicInvent 4.0 Lt Shirt Sh SL - Base layer - Women's48,90 €

Energy Accumulator 4.0 Pants 3/4 - Base layer - Women's

-5% Extra - Code Spring5

X-BionicEnergy Accumulator 4.0 Pants 3/4 - Base layer - Women's

Invent 4.0 Shirt Long Sleeve - Base layer - Women's

-5% Extra - Code Spring5

X-BionicInvent 4.0 Shirt Long Sleeve - Base layer - Women's

Mightywool Shirt LS - Base layer - Women's

-5% Extra - Code Spring5

X-BionicMightywool Shirt LS - Base layer - Women's119,90 €

Mightywool Pants - Base layer - Women's

-5% Extra - Code Spring5

X-BionicMightywool Pants - Base layer - Women's119,90 €

Mightywool Pants 3/4 - Base layer - Women's

-5% Extra - Code Spring5

X-BionicMightywool Pants 3/4 - Base layer - Women's109,90 €

Mightywool Pants - Base layer - Women's

-5% Extra - Code Spring5

X-BionicMightywool Pants - Base layer - Women's119,90 €

Mightywool Shirt LS - Base layer - Women's

-5% Extra - Code Spring5

X-BionicMightywool Shirt LS - Base layer - Women's119,90 €

Invent Fx Shirt LS - Base layer - Women's

-5% Extra - Code Spring5

X-BionicInvent Fx Shirt LS - Base layer - Women's99,90 €

Invent Fx Shirt LS - Base layer - Women's

-5% Extra - Code Spring5

X-BionicInvent Fx Shirt LS - Base layer - Women's99,90 €

Invent 4.0 Lt Boxer Shorts - Underwear - Men's

-5% Extra - Code Spring5

X-BionicInvent 4.0 Lt Boxer Shorts - Underwear - Men's44,90 €

Invent 4.0 Lt Boxer Shorts - Underwear - Women's

-5% Extra - Code Spring5

X-BionicInvent 4.0 Lt Boxer Shorts - Underwear - Women's44,90 €

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

-5% Extra - Code Spring5

X-BionicEnergy Accumulator Light Shirt LS - Base layer - Women's154,90 €

Energy Accumulator Light Shirt LS 1/2 Zip - Base layer - Women's

-5% Extra - Code Spring5

X-BionicEnergy Accumulator Light Shirt LS 1/2 Zip - Base layer - Women's164,90 €

Energy Accumulator Light Shirt LS 1/2 Zip - Base layer - Women's

-5% Extra - Code Spring5

X-BionicEnergy Accumulator Light Shirt LS 1/2 Zip - Base layer - Women's164,90 €

Energy Accumulator Light Pants 3/4 - Base layer - Women's

-5% Extra - Code Spring5

X-BionicEnergy Accumulator Light Pants 3/4 - Base layer - Women's

Energy Accumulator 4.0 Shirt LG SL - Base layer - Women's

-5% Extra - Code Spring5

X-BionicEnergy Accumulator 4.0 Shirt LG SL - Base layer - Women's

Energy Accumulator 4.0 Shirt LG SL - Base layer - Women's

-5% Extra - Code Spring5

X-BionicEnergy Accumulator 4.0 Shirt LG SL - Base layer - Women's

Radiactor 4.0 Shirt LG SL - Base layer - Women's

-5% Extra - Code Spring5

X-BionicRadiactor 4.0 Shirt LG SL - Base layer - Women's

Heatloop Shirt LS - Base layer - Women's

-5% Extra - Code Spring5

X-BionicHeatloop Shirt LS - Base layer - Women's

Heatloop Shirt LS - Base layer - Women's

-5% Extra - Code Spring5

X-BionicHeatloop Shirt LS - Base layer - Women'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