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KLOSTAIN Premium Cabin Backpack 45x36x20 cm – 30L easyJet Underseat Bag – 15.6″ Laptop
easyJet underseat size
45x36x20 cm: easyJet’s free underseat bag size, and a proper cabin bag on other airlines.
A week away in a single bag.
- 45x36x20 cm, spot on for easyJet: free underseat bag, no add-on needed
- 30 litres: up to 50% more space than a 20L bag, for 4 to 6 days away
- Opens flat to 180° like a suitcase: everything is easy to pack and find, even at security
- Separate laptop compartment for laptops up to 15.6″, kept apart from the rest of your things
- Hidden anti-theft back pocket and luggage strap to slide over your suitcase handle
- Smarter finish and reinforced base: as sharp at the office as at the airport
- Padded airflow back, cushioned straps and chest strap: comfortable even when full
Size:
Colour: Navy Blue
24–48h delivery
14-day money-back guarantee
Ships from France
Also available in the Classic version with a USB port: see the model
Description
Your cabin suitcase, as a backpack
45 x 36 x 20 cm: easyJet’s free underseat bag size, and a cabin bag accepted by most airlines. 30 litres to travel for up to a week with just one bag and your hands free.
💶
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 45 x 36 x 20 cm format flies free under the seat on easyJet and meets the cabin bag limits of other airlines.
| Airline | Maximum size | Bag type | KLOSTAIN Premium 30L |
|---|---|---|---|
| easyJet | 45 x 36 x 20 cm | Free personal item | ✓ Accepted |
| Ryanair | 55 x 40 x 20 cm | Cabin bag (Priority add-on) | ✓ Accepted |
| Wizz Air | 55 x 40 x 23 cm | Cabin bag (Priority add-on) | ✓ 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 |
| Vueling | 55 x 40 x 20 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 15.6″, 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
- Reinforced base and smarter finish so the bag keeps its shape
What fits in 30 litres
Example for a 5 to 6-day trip. A rough guide – it depends on what you pack.
👕5 T-shirts
👖2 pairs of trousers
🧥A jumper
👟A pair of light trainers
🧦Underwear and socks
🧴Wash bag
💻Laptop
🔌Chargers and cables
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 | 45 x 36 x 20 cm |
|---|---|
| Capacity | 30 litres |
| Laptop | Up to 15.6″ |
| 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 |
| Colours | 5 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″ | 15.6″ | 15.6″ |
| See the 20L | See the 24L | You are here |
Also available in the Classic version with a USB port: discover the KLOSTAIN 30L Classic.
Frequently asked questions
Is a 45x36x20 bag free on easyJet?
Yes. 45 x 36 x 20 cm is the size of the underseat bag included with every easyJet ticket. On Ryanair or Wizz Air it travels as a cabin bag (Priority add-on).
How many days’ worth of clothes can I pack?
4 to 6 days for most travellers, and up to a week in summer with light clothing.
Can I carry a laptop?
Yes, a separate compartment holds a laptop up to 15.6″, with pockets for the charger and cables.
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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