The biggest bag you can take for free
40 x 30 x 20 cm is the maximum size of the free personal item on Ryanair, Wizz Air and Vueling. The KLOSTAIN 24L makes the most of every centimetre, so you pack more without paying more.
Savings on every flight
No need to add a paid bag: your backpack pays for itself within a few trips.
Everything in its place
180° opening, compressible main compartment, laptop sleeve and quick-access pockets: no more digging around.
Made for walking
Airflow back, padded straps and a chest strap: you’ll forget you’re carrying it.
Accepted by the major airlines
The 40 x 30 x 20 cm format meets the free personal item size of the main airlines, and of course their cabin bag limits.
| Airline | Maximum size | Bag type | KLOSTAIN 24L |
|---|---|---|---|
| Ryanair | 40 x 30 x 20 cm | Free personal item | ✓ Accepted |
| easyJet | 45 x 36 x 20 cm | Free personal item | ✓ Accepted |
| Wizz Air | 40 x 30 x 20 cm | Free personal item | ✓ Accepted |
| Vueling | 40 x 30 x 20 cm | Free personal item | ✓ Accepted |
| Eurowings | 40 x 30 x 25 cm | Free personal item | ✓ Accepted |
| British Airways | 56 x 45 x 25 cm | Cabin bag | ✓ Accepted |
| Virgin Atlantic | 56 x 36 x 23 cm | Cabin bag | ✓ Accepted |
| Lufthansa | 55 x 40 x 23 cm | Cabin bag | ✓ Accepted |
Organisation that saves space
- 180° suitcase-style opening: the bag opens flat so you can see everything at a glance
- Main compartment with a compression strap to keep clothes compact
- Separate laptop compartment for laptops up to 15″, with pockets for cables, pens and chargers
- Quick-access front pocket for your phone, earphones or boarding pass
- Water-resistant layer to keep damp items separate
- Two side pockets for a water bottle and umbrella
- Anti-theft back pocket, hidden while you wear the bag
- Luggage strap: slide the bag over the handle of your wheeled suitcase
- External USB port linked to your power bank (not included) to charge on the move
What fits in 24 litres
Example for a 4-day trip. A rough guide – it depends on what you pack.
Comfortable from take-off to arrival
- Padded airflow back that lets air circulate
- Wide, cushioned shoulder straps, adjustable in length
- Chest strap to keep the load stable
- Padded top handle for carrying by hand
- Luggage strap: slides over your suitcase handle
Specifications
| Dimensions | 40 x 30 x 20 cm |
|---|---|
| Capacity | 24 litres |
| Laptop | Up to 15″ |
| Opening | 180°, suitcase-style |
| Material | High-density, water-resistant polyester |
| Carrying | Airflow back, wide padded adjustable straps, chest strap, padded handle |
| Practical | Luggage strap, anti-theft pocket, external USB port |
| Colours | 8 colours |
Which size should you choose?
Same design, three sizes to suit your airline and trip length.
| 20L · 40x20x25 | 24L · 40x30x20 | 30L · 45x36x20 | |
|---|---|---|---|
| Best for | Ryanair, Vueling, weekends | Max free size on Ryanair and Wizz Air | easyJet, week-long trips |
| Recommended trip length | 2 to 4 days | 3 to 5 days | 4 to 6 days |
| Laptop | 14″ | 15″ | 14″ |
| See the 20L | You are here | See the 30L |
Prefer a smarter finish? Discover the KLOSTAIN 24L Premium.
Frequently asked questions
Is a 40x30x20 bag free on Ryanair?
Yes. 40 x 30 x 20 cm is the maximum size of Ryanair’s free personal item, also accepted by Wizz Air and Vueling. Tighten the compression straps so the bag keeps its shape.
How many days’ worth of clothes can I pack?
3 to 5 days depending on how you pack. It’s the best balance between capacity and free cabin allowance.
Can I carry a laptop?
Yes, a separate compartment holds a laptop up to 15″, with pockets for the charger and cables. For a 15.6″ laptop, choose the Premium 24L or 30L.
Is it comfortable when full?
The back is padded with airflow channels, the shoulder straps are wide and adjustable, and the chest strap spreads the weight. It’s easy to carry through a whole day of travel.
Can airline size limits change?
Yes, airlines sometimes update their rules. Always check the size shown on your booking before you fly.
What if the bag isn’t right for me?
You’re covered by our 14-day money-back guarantee.
Your next flight, with no baggage fees
Choose your colour and check out the current offer.

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