Wash Bag in Hand Luggage: What the Liquid Rules Actually Allow
No airline or airport restricts a wash bag. Not by material, not by size, as long as it fits inside the cabin allowance you already have. What is restricted is what you put in it, and that distinction decides both how you pack and which size is worth buying.
Here is the part that catches people out. A leather wash bag can never be the transparent bag that security asks for. If you are carrying liquids, you are carrying two things: a resealable see-through bag that goes in the tray, and the wash bag that holds everything else. Anyone presenting a leather wash bag as a solution to the liquid rule has the relationship backwards.
The rule, as it stands
Read from Amsterdam Schiphol's own page in October 2026: liquids in hand baggage "may only be carried in containers holding max. 100ml", all of them must go into "a resealable, transparent 1-litre bag", and you must not bring "more than one bag per person". Medication, dietary supplements and baby food that you need on your trip are exempt from the limit.
Assume that rule. It is the baseline across Europe, it is still in force at the busiest airport in the Netherlands, and a bag packed to it will clear every checkpoint on the continent.
The complication: it varies by checkpoint, not by country
The 100 ml limit was written when scanners could not see inside a bottle. Newer CT scanners can, and where they are installed the limit can be relaxed. What almost nobody tells you is that this is now decided lane by lane rather than airport by airport.
Frankfurt is the clearest example, and its own security page spells it out. At the modern CT checkpoints, which cover most Terminal 1 gates and all of Terminal 3, "you may carry liquids of up to 2 liters in your hand luggage. Packing them in a transparent, resealable bag is not required." Laptops and tablets can stay in the bag too. At the traditional checkpoints, which include gates C1, C2, C4 and C6 plus some Terminal 1 and transfer lanes, the old rule still holds: 100 ml containers in a transparent resealable bag of up to 1 litre.
Same airport. Same morning. Two different rules, decided by which gate you happen to be flying from. Frankfurt's own advice is to check your departure gate before you pack.
Which is useful information and also an impossible planning basis. Gates change. Aircraft swap. A connection routes you through a transfer checkpoint you did not choose. So the practical conclusion is the boring one: pack to 100 ml and a 1 litre bag, and treat a generous lane as a pleasant surprise rather than something you arranged.
If you are flying from Munich, Paris, Madrid, Rome, Warsaw or Brussels, the rule at your particular terminal may be either of the two above. We could not verify those airports from their own pages this week, so we are not going to print numbers for them. Check the airport's own security page, and check which terminal you leave from.
What this does to the size question
Once you accept that liquids live in a sealed transparent bag, the wash bag's job changes. It is no longer the container for your shampoo. It is the container for the sealed bag plus everything that is not a liquid: toothbrush, razor, comb, deodorant stick, contact lens case, nail scissors, plasters, a spare charging cable if that is where you keep it.
That makes the useful size smaller than most people assume. A wash bag big enough to swallow a full-size bottle of shampoo is a wash bag you will carry half empty on every flight, because the shampoo was never allowed anyway.
Two numbers are worth knowing. A 1 litre transparent bag, filled, is roughly the size of a paperback. And the sealed bag has to lie flat enough to come out quickly at the tray, which means it wants to be the last thing in rather than buried under a razor.
Our two, measured
| Bag | Dimensions | External volume | Weight | Normal price |
|---|---|---|---|---|
| Caldre Wash Bag | 23 × 11 × 11 cm | about 2.8 litres | 355 g | € 59 |
| Mori Wash Bag | 24 × 13 × 10.5 cm | about 3.3 litres | 355 g | € 64 |
Those volumes are calculated from the external dimensions, so the usable space inside is less once the leather, the lining and the seams take their share. Treat them as a way of comparing the two rather than as capacity you can fill.
The Caldre is the narrower of the two at 11 cm across, with one main compartment and an internal zip pocket. It holds a filled 1 litre transparent bag, a toothbrush, a razor and the small hard objects, and it does that without becoming a block in the bottom of a travel bag. The Mori is 2 cm wider and adds a front zip pocket, which is the one feature that genuinely changes how the bag is used on a trip: the sealed liquid bag goes in the front, comes out at the tray, and goes back without opening the main compartment. Both are 355 g empty. Both use nappa leather over a cotton lining with YKK zips.
If you are deciding between them, the front pocket is the reason to pay the extra five euros, and it is a better reason than the extra half litre.
Where honesty says do not buy one
Three cases, and they are real.
Neither product page states a waterproof or wipe-clean lining, so we are not going to claim one. Leather and a leaking bottle of shower gel are a bad combination. Decant into travel bottles, keep them sealed inside the transparent bag, and let that bag be the waterproof layer. That is good practice in any wash bag and it is necessary in a leather one. Our notes on caring for a leather bag cover what to do if something does get in.
If your toiletries are already solid, you do not have a liquid problem and you may not need a structured bag at all. A solid shampoo bar, a soap, a stick deodorant and a toothpaste tablet pass every checkpoint in the world with no transparent bag and no 100 ml arithmetic. That costs a few euros and solves the problem more completely than anything we sell. It is worth saying plainly.
And if you fly basic fares where the under-seat bag is your whole allowance, the wash bag is competing for space with the laptop. On that kind of trip the honest advice is a sealed transparent bag and nothing else, tucked flat into the bag you already carry. Whether your bag qualifies for that allowance in the first place is the subject of whether a laptop bag counts as a carry-on or a personal item.
Where it goes once you are packed
In a weekender, the wash bag wants to sit flat against the back panel rather than in a side pocket, because depth is the dimension that fails a cabin gauge. We set out which bags clear which allowance in whether a weekender can be your carry-on, and both of our travel bags sit exactly on the depth limit at several carriers, so a bulky wash bag pressed against the side is the difference between compliant and not.
On weight, a 355 g wash bag plus a filled 1 litre bag of liquids is close to a kilo and a half. Against an 8 kg cabin allowance that is a meaningful share, which is the same arithmetic we ran from the volume side in what size weekender you need for a 2 or 3 night trip.
Both bags, in black and cognac, sit in the wash bags collection.
The short version
- The wash bag is never restricted. The liquids inside it are.
- Pack to 100 ml containers in one transparent resealable 1 litre bag, per person. That clears everything.
- A leather wash bag is not the transparent bag and cannot replace it. You carry both.
- Some checkpoints now allow more, and it is decided lane by lane rather than airport by airport. Do not plan around it.
- Buy for the sealed bag plus the solid objects, not for a bottle of shampoo you are not allowed to bring.
- Decant, seal, and keep the liquids inside the transparent bag so the leather never meets them.
- Check your own airport's security page, and check your terminal.
Liquid rules read from Amsterdam Schiphol's and Frankfurt Airport's own security pages in October 2026. Rules change and vary by checkpoint, so check your departure airport before you pack. Bag dimensions and weights as listed on each product page. Volumes calculated from external dimensions.
