The Underseater Duffel Bag

EVERYDAY COLLECTION - 28L

Sale price€133,00 Regular price€189,00

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PU-vegan leather
Unique anti-stuck zippers
Made from 100% recycled materials
Water-repellent material/coating

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15% discount on a suitcase – automatically applied at checkout.

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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
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Why 100,000 others are fans

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.

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Gemaakt om verder te gaan.

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.

Uniek en doordacht design

Engineering Excellence

Thoughtful down to the last detail
Made from high quality materials
Tested under the toughest conditions

Frequently Asked Questions

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

Customer Reviews

Based on 68 reviews
79%
(54)
9%
(6)
4%
(3)
3%
(2)
4%
(3)
1
13311241d
ongekende fijne weekender

dit is een weekendtas waar echt iedereen wat aan heeft, veel details en accesoires. wat een top ding

d
de Leeuw1
goed

mooie rugzak voor werk. de organizer is fijn mer veel accessoires en vakjhes,

r
r. pedro
rolltop

handige rolltop met veel funcites. ben erg onwijs content mee

r
roug1
Fijne rolltop

een rugzak die echt alles heeft. iedeaal voor sport en werk.

D
Daphne V.
Eindelijk een tas die er luxe uitziet

De Weekender oogt alsof hij €300+ zou moeten kosten. Echt superstrak design. Veel complimenten gekregen tijdens een trip naar Parijs. Blij mee!

M
Miriam Vogt
Miriam Vogt

Ich nutze die Underseater-Tasche täglich für Arbeit. Laptop passt sicher hinein, viele praktische Fächer, sehr leicht. Würde ich sofort wieder kaufen!

F
Fields
Amazing Quality 😍🔥

Got the Weekender and WOW. The bag looks even better in real life. Love the premium vibe, the soft handles, and the amount of pockets. Using it every week now. 🔥

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