Looking for the flexibility of a duffel in a carry-on size? At ByMetz, you will find smart 40x30x20 solutions that offer the same freedom as a duffel bag carry-on: light, strong and surprisingly spacious. Choose your compact travel companion and board with peace of mind, from city trips to short stays. Also explore our 40x30x20 Carry-on collection.
What is a carry-on duffel and which alternative suits you?
A duffel bag is a flexible travel bag with a wide opening and plenty of packing space. Perfect for shorter trips, sports and weekends away. If you are specifically looking for a carry-on duffel, the key factors are the right dimensions, carrying comfort and smart organisation. ByMetz offers compact alternatives that provide the same convenience, while being optimised for airline requirements and modern travel. Travelling with only an under-seat item? Choose 40x30x15 or 40x30x20. Our Underseaters are an even more compact option. Want to see all options together? Explore our overview of travel bags (duffels).
For hands-free comfort, choose our expandable 40x30x15 to 40x30x20 carry-on backpack. It combines the capacity of a small duffel with the comfort of a backpack, including a laptop compartment and organised sections. Prefer the look and packing style of a travel bag with a shoulder strap? Discover our 40x30x20 travel bags with shoulder straps. Want the comfort of wheels without having to carry your bag? Explore our Travel bags with wheels.
Sizes and airline rules
Every airline has its own rules. As a guideline, 40x30x20 cm or 40x30x15 cm often fits under the seat, while larger cabin sizes are usually subject to payment or limited acceptance. When in doubt, check the standard cabin size, such as 55x40x20 Carry-on. For a complete overview of the most common sizes by airline, see our Carry-on dimensions: complete guide.
| Size | Use | Benefit |
|---|---|---|
| 40 x 30 x 15 cm | Under the seat | Always with you, quick boarding |
| 40 x 30 x 20 cm | Under the seat | Just a little more capacity |
| Up to approx. 55 x 40 x 23 cm | Overhead compartment | More capacity, often at an extra cost |
Why choose ByMetz as a smart alternative to the classic duffel bag?
Our carry-on backpacks and travel bags are designed to offer the same easy packing as a duffel, with extra benefits for air travellers:
- Lightweight and shape-retaining, for efficient packing
- Expandable design from 40x30x15 to 40x30x20
- Integrated laptop compartment and organiser pockets
- Comfortable carrying options: back, hand or shoulder
- Water-repellent materials and sturdy zips
- Personal advice by email (info@bymetz.nl)
Not sure whether to choose wheels or a bag without wheels? Read our blog Travel bag with or without wheels? and choose what best suits your travel style.
Tips for choosing and packing
Maximise space and comfort without extra costs.
- Choose the smallest size you need
- Roll your clothes and use packing cubes
- Keep heavy and compact items close to your back
- Store 100 ml liquids in a transparent bag
- Use outer pockets for travel documents
Frequently asked questions
What is a duffel bag?
A duffel bag is a soft, cylindrical travel bag with a wide opening and often a shoulder strap. Ideal for short trips and sports. For carry-on use, it is important that the bag stays within 40x30x20 or 40x30x15 cm.
Which backpack can be taken as carry-on luggage?
This varies by airline. A bag measuring 40x30x20 or 40x30x15 cm is often a safe choice. The ByMetz backpack from 40x30x15 to 40x30x20 is designed for this purpose and combines comfort with maximum cabin compatibility.
What is 40x30x20 carry-on luggage?
This is a commonly used under-seat size for carry-on luggage. It fits at the front of the cabin, under the seat in front of you. With smart organisation, you can fit a surprising amount into 40x30x20 cm.
Can a North Face duffel M be taken as carry-on luggage?
The M version is generally too large for free carry-on luggage and usually falls outside under-seat or standard cabin requirements. Choose a more compact model or opt for 40x30x20 alternatives such as the ByMetz backpack or travel bag.
Also explore
Men's travel bags · Women's travel bags · Women's carry-on bags · Carry-on travel bags without wheels · Duffel bags
ByMetz is an official dealer of the brands in this collection. You can always contact us for the full warranty, and you have a 30-day return policy.