Exclusively available at RebelPak

RebelPak 40l Under Seat (Ryanair/ Easyjet)

4.8/5 10,000+ customers
£139.99 £229.99 SAVE 39%
In stock
Flies free on 33 airlines. No gate fees. 40×30×20cm

Check your airline

Your RebelPak measures 40×30×20cm

Airline Free allowance Your RebelPak
Ryanair 40×30×20cm Free under the seat
easyJet 45×36×20cm Free under the seat
Wizz Air 40×30×20cm Free under the seat
Jet2 40×30×20cmplus a free 56×45×25cm cabin bag Free under the seat
TUI 40×30×20cmplus a free 55×40×20cm cabin bag Free under the seat
British Airways 56×45×25cm Free — goes overhead
Virgin Atlantic 56×36×23cm Free — goes overhead
Vueling 40×30×20cm Free under the seat
Norwegian 55×40×23cm Free — goes overhead
SmartWings 55×40×23cm Free — goes overhead
Volotea 40×30×20cm Free under the seat
Eurowings 40×30×25cm Free under the seat
Lufthansa 55×40×23cm Free — goes overhead
Swiss 55×40×23cm Free — goes overhead
Austrian Airlines 55×40×23cm Free — goes overhead
KLM 55×35×25cm Free — goes overhead
Air France 55×35×25cm Free — goes overhead
Iberia 56×45×25cm Free — goes overhead
TAP Air Portugal 55×40×25cm Free — goes overhead
SAS 55×40×23cm Free — goes overhead
Finnair 55×40×23cm Free — goes overhead
LOT Polish Airlines 55×40×23cm Free — goes overhead
Turkish Airlines 55×40×23cm Free — goes overhead
Emirates 55×38×22cm Free — goes overhead
Qatar Airways 50×37×25cm Free — goes overhead
American Airlines 45×35×20cmplus a free 56×36×23cm cabin bag Free under the seat
Delta Airlines 45×35×20cmplus a free 56×36×23cm cabin bag Free under the seat
United Airlines 56×35×22cm Free — goes overhead
JetBlue 43×33×20cmplus a free 56×36×23cm cabin bag Free under the seat
Southwest Airlines 61×41×25cm Free — goes overhead
Air Canada 55×40×23cm Free — goes overhead
WestJet 53×38×21cm Free — goes overhead
Qantas 56×36×23cm Free — goes overhead

Allowances are the free allowance on a standard economy fare and were checked against each airline in October 2026. The larger overhead bag is a paid extra on Ryanair, easyJet, Wizz Air and Aer Lingus, and on the cheapest fares of some other carriers (Lufthansa Economy Light, Finnair Light and similar), so those are listed for the under-seat allowance only. Always check your own fare before you fly.

  • Slides under the seat as your free personal item
  • Never pay a gate fee again
  • Vacuum compression: pack 50% more
  • Pack up to a week's worth of clothes

Included free with every order

  • Free£29.99 Travel VacTravel Vac
  • Free£19.99 EU travel adapterEU travel adapter
  • Free£24.99 Wash bagWash bag
  • Free Free UK shippingFree UK shipping

Free UK delivery · 45-day money-back guarantee

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Gate-Proof Guarantee

Charged a cabin bag fee at the gate with your RebelPak? We refund the fee and the bag. T&Cs apply.

Try it risk-free for 45 daysLove it or your money back.
  • Took this around Thailand and Malaysia and managed to cram everything in — shoes, jackets, the lot. Such a good backpack for travelling, and having the vacuum pump included is really handy.
    ★★★★★ Sophie P. Verified buyer
  • Flown with Ryanair twice now (Spain and back) and didn't pay baggage fees either time. Fits in the measuring thing like a glove and holds way more than I expected and I walked straight through the gate with no issues. Already saved me over £80.
    ★★★★★ Tony R. Verified buyer
  • Really impressed with the quality so far. I've been travelling around Europe all summer and it's held up brilliantly. Really pleased with it.
    ★★★★★ Stephen H. Verified buyer
Features
  • Built to Ryanair's 40 × 30 × 20cm under-seat size
  • Built-in vacuum compression system
  • Holds up to 40 litres of clothing, compressed
  • USB-C and USB-A charging ports
  • TSA-approved anti-theft lock
  • Water-resistant and odour-resistant
  • Padded 16in laptop compartment
  • Side water bottle pocket
How it Works

Pack the bag as you normally would, then close the compression compartment.

Clip the included pump onto the one-way valve and press once. It draws the trapped air out of your clothes in about thirty seconds.

Soft items lose roughly half their bulk, so the same bag holds a lot more, and it still measures within the under-seat limit when you reach the gate.

Why you will love it

Budget airlines make their money on bag fees. This bag is built to the exact size they allow for free, so you walk past that queue every time.

The compression compartment is the part people are surprised by. It is the difference between three days of clothes and a week of them, in a bag that has not changed size.

The rest is the detail you would want anyway: a padded laptop pocket, a lock, a charging port and somewhere for a water bottle.

Dimensions and materials

Travel size: 40 × 30 × 20cm (16 × 12 × 8in) — the under-seat size Ryanair allows free
Packing capacity: up to 40 litres of clothing, compressed down into that size
Weight: 1.5kg

Main fabric: 100% recycled 900D nylon, wax-coated face with a PU back, GRS certified and PFC free
Back panel: polyester interlock
Lining: 230T polyester
Mesh: polyester
Webbing: polypropylene and nylon herringbone
Foams: polyethylene, EVA and neoprene

Shipping and delivery

We ship within the United Kingdom.

Black is held in stock and leaves us within 3 working days, sent by Royal Mail Tracked 24. Express delivery is available at checkout and aims for the next working day after dispatch — Royal Mail do not guarantee it.

Every other colour is ordered in, so allow about 14 working days. On a two-bag order the whole order travels at the pace of the slower bag.

You will get tracking by email as soon as your bag is dispatched. Prices include all duties and taxes, with nothing further to pay on delivery.

Returns and refunds

45 days to change your mind, from the day your bag arrives. It needs to come back unused and in its original packaging.

Return postage is yours unless the bag is faulty or we sent the wrong thing, in which case we cover it.

Your legal rights sit underneath all of this and we cannot reduce them. Full details are in our refund policy.

RebelPak customers travelling with their bags
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Travellers across the UK who pack lighter, stop paying to bring a bag, and never go back to dragging a suitcase.

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Rated 4.8/5 by verified buyers

Recommended for smarter airline travel.

Designed to maximise packing space while staying within underseat luggage limits.

“RebelPak is a practical choice for travellers who want to pack more without paying for additional cabin baggage. Its space-saving design is made to fit within the underseat luggage limits used by popular budget airlines, while the built-in vacuum compression section reduces the volume of clothing to help you fit up to 50% more inside than a regular rucksack. Comfortable to carry and thoughtfully organised, it keeps travel essentials secure and easy to reach. Whether it’s a weekend city break or a longer trip, RebelPak helps travellers make better use of every available inch.”

Eleanor Davis
Chief Editor
Travel and Tourism Magazine

Reviews

What RebelPak owners say

  • Customer packing a black RebelPak on a hotel bed
    ★★★★★

    Straight past the gate

    Took the RebelPak to Alicante and it went under the seat without anyone looking twice. The compression zip is the bit that sold me — a full week of clothes went in.

    Marcus T. Verified buyer

  • Customer holding a light blue RebelPak at home
    ★★★★★

    Holds more than it looks

    My husband bought me the RebelPak before a trip to Bordeaux. I got everything I wanted in it and it still slid under the seat on Jet2.

    Rachel C. Verified buyer

  • Customer with a green RebelPak in an airport terminal3 months awayStill solid
    ★★★★★

    Three months, no complaints

    Three months around Southeast Asia with the RebelPak and there is barely a mark on it. The pump gets used every single time we repack.

    Joanne W. Verified buyer

RebelPak travellers boarding a flight with their bags
  • Beat Every Gate SizerBuilt to Ryanair’s 40 × 30 × 20cm under-seat size exactly, and well inside easyJet’s 45 × 36 × 20cm. Every millimetre engineered to clear the sizer.
  • Pack More Without PayingThe built-in vacuum compression system shrinks what you have packed, so a full 40 litres goes in a bag that still slides under the seat.
  • Skip the Gate FeeNo cabin bag fee on Ryanair, easyJet, Wizz Air or Jet2. Check your own airline in the list above — it pays for itself on the first trip.
  • Try It Risk-Free45 days to change your mind, plus our Gate-Proof Guarantee: charged a cabin bag fee with your RebelPak and we refund the fee and the bag.
Get yours today

Loved by frequent flyers in the UK

The choice

Two ways through the gate

Same flight. Same bag sizer. Only one of you reaches for a card.

A traveller paying a gate fee at the boarding gate

The expensive way

Without RebelPak

  • A gate fee every time your bag gets pulled at the sizer.
  • Repacking on the floor because it's two centimetres too deep.
  • Holiday money gone before you have even landed.

The free way

With RebelPak

  • Straight past the sizer, every single time.
  • Built to the 40 × 30 × 20cm limit the big budget carriers set, to the millimetre.
  • Vacuum compression, so a week of clothes takes half the room.
Get on the free side

Frequently Asked Questions

Will it actually fit under the seat? +

It is built to 40 × 30 × 20cm — exactly the personal-item size Ryanair publishes, and well inside easyJet’s 45 × 36 × 20cm. Use the airline checker further up the page to see your own airline's allowance before you buy.

Does the compression need power at the airport? +

No. The pump charges over USB-C and runs from a power bank, so there is nothing to plug in while you are travelling.

Can I take this as well as a cabin bag? +

Yes. It is sized as your free personal item, so it goes under the seat in addition to any cabin bag you have paid for.

Which airlines does it work with? +

Any carrier with a personal-item allowance of 40 × 30 × 20cm or larger, which covers most European airlines. The checker above lists them individually.

How long does delivery take? +

Black is in stock and leaves us within 3 working days, by Royal Mail Tracked 24. Express delivery at checkout aims for the next working day after dispatch, though Royal Mail do not guarantee it. Every other colour is ordered in, so allow about 14 working days.

What if it does not work for me? +

You have 45 days to send it back for a full refund, unused and in its original packaging.