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The Underseater Duffel Bag

Q: Do I have to pay shipping costs?

We deliver our products in the Netherlands and Belgium from 50 euros completely free. Do you want one of our products delivered outside the Netherlands or Belgium? Then send an email with product preference and delivery address to: info@onyxjourney.nl

EVERYDAY COLLECTION - 28L

1 487 kr

2 113 kr

SAVE 626 kr

Color:

In stock in our warehouse - Yet pieces available

This product is sold out

Ordered before 22:00, delivered on 2-3 december

Free shipping on orders over €50

Pay in 3 installments of496 kr of

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PU-vegan leather

Unique anti-stuck zippers

Made from 100% recycled materials

Water-repellent material/coating

Hybrid Pro Carry-on Suitcase - Front pocket

2 706 kr 3 007 kr

Color

Compression Packing Cubes - 5pcs

582 kr 727 kr

Color

Toilet bag / Cosmetics Organizer - Large

369 kr 448 kr

Color

Description

Properties

Lifetime warranty

About ONYX

The Underseater Duffel is designed as the perfect bag for your daily routine and your travels.

The spacious main compartment opens fully like a suitcase, making packing clear and fast. Inside, you’ll find smart organizers, a padded 16-inch laptop sleeve, and a removable tech pouch with a magnetic closure — ideal for your cables, chargers, and other gadgets.

Made from recycled polyester with PU vegan leather and finished with a water-repellent, scratch-resistant coating, this duffel is built to handle your busy routine as well as any trip.

Thanks to its compact size, this duffel works perfectly as an underseater — ideal when you want to fly without a suitcase.

• Volume: 28 liters
• Dimensions: 42 × 18 × 30 cm (W×D×H)
• Material: Recycled polyester combined with PU vegan leather
• Finish: Water-repellent and scratch-resistant
• Layout: Large suitcase-style compartment with multiple organizers
• Laptop compartment: Padded 16-inch sleeve
• Other: Removable tech pouch with magnetic closure, trolley sleeve, internal organizers
• Carry options: Adjustable and removable shoulder strap + reinforced handles

We offer a lifetime product warranty on all our products.

At ONYX® we create high-quality, sustainable travel products that will take you miles without compromising on look & comfortable feel.

100,000+ satisfied customers have gone before you

The Underseater Duffel Bag

1 487 kr

2 113 kr

SAVE 626 kr

EVERYDAY COLLECTION

Designed for everyday use, built for every trip

We created this bag because you need one that can handle everything: work, school, sports, and spontaneous trips. A bag compact enough to qualify as an underseater, yet spacious enough to pack in an organized way—just like opening a suitcase. With thoughtful pockets, a 16-inch laptop compartment, and a detachable tech pouch, it offers exactly the functionality you miss in regular bags. In short: one bag for every occasion.

Thoughtful details

Detachable Modular Tech Organizer.

Padded laptop compartment suitable for laptops up to 16 inches.

Let me know if you'd like any further adjustments!

Lifetime warranty

Our Hybrid Pro collection is covered by a lifetime warranty.

Free Shipping & Returns

High quality. Designed in the Netherlands, made for the world.

Dutch design

Free shipping and returns on all our suitcases and backpacks.

Frequently Asked Questions

Welke verzendmethodes zijn er?

We do our utmost to get your order to your home as quickly and smoothly as possible. Below you will find all information about our shipping methods per country:

The Netherlands

✔ Shipping with PostNL
✔ Ordered before 10pm = delivered the next day
✔ Delivery to home address or PostNL parcel point of your choice

Belgium

✔ Shipping with bpost
✔ Ordered before 10pm = delivered the next working day
✔ Delivery to your home or to a bpost collection point nearby

Germany / Austria

✔ Shipping with DPD
✔ Delivery within 1-3 business days
✔ Delivered to your home or to a DPD Pickup parcel shop

Flexible delivery
During checkout you can choose a delivery time that suits you best. Would you rather pick up your package when it suits you? Then choose a delivery point nearby.

Do I have to pay shipping costs?

We deliver our products in the Netherlands and Belgium from 50 euros completely free. Do you want one of our products delivered outside the Netherlands or Belgium? Then send an email with product preference and delivery address to: info@onyxjourney.nl

Discover our best-sellers

No, unfortunately that is not possible. After you have placed the order with us, the order can no longer be changed. You can return the order free of charge. Do you want to return a product? Then click here

Do you have another question about one of our products? Please contact us using the contact form below

Contact Support

Goede kwaliteit

Heel erg blij met deze tas, past veel in en is van zware kwaliteit!

Mooie rugtas

Het is een goede kwaliteit en mooie rugtas.
Lekker ruim en stevig materiaal

Genial

Ich bin restlos begeistert. Die Koffer sind traumhaft schön, und auch der Rucksack ist perfekt.Super Material, super Service, schneller Versand. Sehr empfehlenswert! 👍

Schönes Design, gute Wahl.

Die Rolltop Pro – ich nutze sie für Büro und Wochenenden. Der Rollverschluss erlaubt viel Flexibilität. Das Laptopfach ist solide, das Material hochwertig. Schönes Design, gute Wahl.

Rolltop top

Ik gebruik de Rolltop Pro dagelijks voor werk én vrije tijd. De roll-top sluiting maakt ‘m echt flexibel: als ik veel spullen heb rol ik ‘m uit, als weinig, dan compact. Laptopvak zit goed beschermd. Fijn dat ‘ie er ook stijlvol uitziet.

Weekender

Ik gebruik de Weekender nu een paar weken en ben er echt tevreden over. Tijdens een weekendje Antwerpen had ik precies genoeg ruimte voor kleding, sneakers, toilettas en wat elektronica. Het schoenenvak onderin is ideaal, daardoor blijft de rest van je spullen netjes. De tas houdt ook goed zijn vorm, zelfs als hij bijna leeg is. De ritsen lopen soepel en het materiaal voelt stevig, alsof het wel een paar jaar mee kan. Tot nu toe geen slijtage te zien.

Reliable bag for both gym and short trips

I bought the Weekender mainly for weekend getaways, but I now use it 3–4 times a week for the gym as well. The lower compartment fits my training shoes perfectly and keeps sweat away from my clothes. The water bottle pocket is tight enough so nothing falls out when biking. After a month of heavy use, the bag still looks new—no fraying, no loose stitching. Really impressed.

1 2 3

Goede kwaliteit

Heel erg blij met deze tas, past veel in en is van zware kwaliteit!

Mooie rugtas

Het is een goede kwaliteit en mooie rugtas.
Lekker ruim en stevig materiaal

Genial

Ich bin restlos begeistert. Die Koffer sind traumhaft schön, und auch der Rucksack ist perfekt.Super Material, super Service, schneller Versand. Sehr empfehlenswert! 👍

Schönes Design, gute Wahl.

Die Rolltop Pro – ich nutze sie für Büro und Wochenenden. Der Rollverschluss erlaubt viel Flexibilität. Das Laptopfach ist solide, das Material hochwertig. Schönes Design, gute Wahl.

Rolltop top

Ik gebruik de Rolltop Pro dagelijks voor werk én vrije tijd. De roll-top sluiting maakt ‘m echt flexibel: als ik veel spullen heb rol ik ‘m uit, als weinig, dan compact. Laptopvak zit goed beschermd. Fijn dat ‘ie er ook stijlvol uitziet.

Weekender

Ik gebruik de Weekender nu een paar weken en ben er echt tevreden over. Tijdens een weekendje Antwerpen had ik precies genoeg ruimte voor kleding, sneakers, toilettas en wat elektronica. Het schoenenvak onderin is ideaal, daardoor blijft de rest van je spullen netjes. De tas houdt ook goed zijn vorm, zelfs als hij bijna leeg is. De ritsen lopen soepel en het materiaal voelt stevig, alsof het wel een paar jaar mee kan. Tot nu toe geen slijtage te zien.

Reliable bag for both gym and short trips

I bought the Weekender mainly for weekend getaways, but I now use it 3–4 times a week for the gym as well. The lower compartment fits my training shoes perfectly and keeps sweat away from my clothes. The water bottle pocket is tight enough so nothing falls out when biking. After a month of heavy use, the bag still looks new—no fraying, no loose stitching. Really impressed.

1 2 3

The HYBRID collection

Bundle & Save

Bundle & Save

2-piece suitcase set bundle

3-piece suitcase set bundle

The adjustable roll top

The Weekender

The new Tumbler drinking bottles

The Choice Of

The Choice Of

The Underseater Duffel Bag

How about this one?

Hybrid Pro Carry-on Suitcase - Front pocket

Compression Packing Cubes - 5pcs

Toilet bag / Cosmetics Organizer - Large

100,000+ satisfied customers have gone before you

Why 100,000 others are fans

Thoughtful details

Gemaakt om verder te gaan.

Uniek en doordacht design

Engineering Excellence

Frequently Asked Questions

The Netherlands

Belgium

Germany / Austria

Discover our best-sellers

Customer Reviews

Customer Reviews

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