Volume40 L
Weight1,045 g
Dimensions50 × 31.7 × 21.6 cm
Cabinwithin the 55 cm limit
Patagonia · Black Hole Duffel 40L
Black Hole Duffel 40L: the Patagonia cabin duffel bag for the long weekend, from the Friday train to the overhead locker.
The Black Hole Duffel 40L is a 40-litre Patagonia duffel bag, designed as a cabin bag for most airlines and trains. On Friday evening it goes on your back to the platform, up onto the luggage rack, and comes home on Sunday without ever going near the baggage carousel. Same 900-denier fabric as the big Black Hole duffels.
Weekend · Air travel · Train
The Friday evening train, the overhead locker, the wet platform.

In the cabin
The overhead locker, on planes and trains alike.
This size is designed as a cabin bag for most airlines and trains. Soft-sided, it squashes into the locker; stuffed to bursting, it bulges.
Under the seat
Personal item, free on most flights.
Overhead locker
The cabin bag, above the seats.
In the hold
Too big for the cabin.
Dimensions 50 × 31.7 × 21.6 cmMost common limit in Europe 55 × 35 × 25 cm: it fits, with over 3 cm to spare on each side
On Ryanair and Vueling, the cabin bag allowance is 20 cm deep, 1.6 cm less than the bag: don't overstuff it. On low-cost airlines this bag is often an extra; check your ticket.
Size limits checked in October 2026; every airline sets and changes its own rules, so check yours before you fly.

What fits inside
40L
A long weekend, packed within reach.
The lid opens wide onto a single main compartment. Underneath it, a mesh pocket keeps papers and small things; on the side, a zipped pocket opens from the inside as well as the outside, and the empty bag packs away into it.
- A mesh pocket under the lid
- A zipped side pocket, open inside and out
- Daisy chains outside, for a jacket





Colours
Five colours, worn, from plum to off-white.
Berry Fig
A deep plum with a cream logo: colour on your back, without shouting.
Sastrugi Summit Blue
A tone-on-tone marbled steel blue, sky-blue straps, yellow logo.
Cinnamon Brown
A golden caramel with orange straps: easy to spot from far down a platform.
Black
Matt black, grey logo: the one that shows the marks of travel least.
Birch White
An off-white with blue straps and a green logo: the brightest of the five.
Ways to carry
On your back to the platform, in your hand down the aisle.


The range
40, 55 or 70 litres?

Black Hole Duffel 40L
40 L · 1,045 g · 50 × 31.7 × 21.6 cm
Light loads and long weekends. The only one of the three that's cabin size on most airlines.
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Black Hole Duffel 55L
55 L · 1,180 g · 58 × 33.8 × 24.1 cm
The long weekend, or a longer trip if you pack neatly. In the hold.
See the Black Hole Duffel 55L
Black Hole Duffel 70L
70 L · 1,365 g · 66 × 36 × 28 cm
Enough for a week at least, or the bulky gear. In the hold.
See the Black Hole Duffel 70LPhotos to the same scale: 50, 58 and 66 cm long.
900denier, the thickness of the yarn
The fabric
900 denier, in a cabin-sized bag.
- 100% recycled polyester ripstop, laminated with a recycled TPU film (a flexible plastic) with a matt finish.
- Padded base. It protects the contents when the bag is set down on hard ground or gravel.
- Factory. In Vietnam, in a Fair Trade Certified™ factory. The lining is bluesign® certified.
In the rain
A shower between the station and the train: the laminated fabric holds.
Light rain
Water-repellent fabric
PU coating and a durable water repellent (DWR) finish: water beads up, then eventually gets through at the seams and zips.
Shower
Laminated fabric
Fabric covered with a TPU film (a flexible plastic) that stands up to the weather. The seams aren't taped.
This bag
Proper rain
Rain cover
A removable cover goes over the whole bag. Without it, the coated fabric eventually lets water through.
The seams aren't taped: in a thunderstorm, put anything that mustn't get wet into a dry bag inside.
Patagonia
A brand that guarantees what it makes, and repairs it.
“We guarantee everything we make”: repair, replacement or refund if a product doesn't satisfy you (Ironclad Guarantee). Your claim goes through Eiken, and we pass it on to Patagonia.
Its products are designed to be repaired: the Worn Wear programme, and more than 100 repair guides written with iFixit.
Founded in Ventura, California. A certified B Corp and founding member of 1% for the Planet; since 2022, Earth has been its only shareholder.
Eiken's take
- Why we chose it
- The heavy fabric of the big Black Hole duffels in a cabin size: you go away for three days without checking a bag, and walk with it when the platform is long.
- Worth knowing
- No laptop pocket and no hip belt: the laptop travels in its sleeve among your clothes, and with 8 kg inside, everything sits on your shoulders.
- Who it's for
- Anyone heading off for a long weekend by train or plane with a single soft bag, who wants neither a suitcase nor a wait at the carousel.
Baptiste, Eiken
Specifications
- Volume40 L
- Weight1,045 g
- Dimensions50 × 31.7 × 21.6 cm
- Cabindesigned as a cabin bag for most airlines and trains
- Carrybackpack (removable shoulder straps), by hand
- Storagemesh pocket under the lid, zipped side pocket reachable inside and out
- Fabricrecycled 900 D polyester ripstop, matt recycled TPU film
- Liningrecycled 200 D polyester, PU coating, bluesign®
- Packed awaypacks into its side pocket
- CertificationsFair Trade Certified™ sewn
- Made inVietnam
- Patagonia style number49339
Specifications: Patagonia data; dimensions converted from inches.
Questions
What are the dimensions and weight of the Duffel 40L?
50 × 31.7 × 21.6 cm and 1,045 g empty, for 40 litres.
Is the Duffel 40L waterproof?
It handles a shower without being waterproof: the fabric is laminated with a TPU film, but the seams aren't taped. In a thunderstorm, get it under cover.
Does the Duffel 40L fit in the cabin on easyJet, Ryanair or Air France?
On easyJet (56 × 45 × 25 cm) and Air France (55 × 35 × 25 cm), yes: 50 × 31.7 × 21.6 cm fits. On Ryanair (55 × 40 × 20 cm, Priority), its 21.6 cm depth is 1.6 cm over the limit: being soft, it squashes down if it isn't overstuffed. On low-cost airlines the cabin bag is often an extra; check with your airline.
Can the Duffel 40L be carried as a backpack, or over the shoulder?
As a backpack, yes: its padded shoulder straps clip on and off. Over the shoulder, no, it has no shoulder strap: otherwise, by hand with its reinforced handles. For a cabin bag that also goes over the shoulder and holds a laptop, the Black Hole Mini MLC 30L.




