The Travel Toiletry Bag Guide (Sizes, Hooks, 100ml Rules)
A good travel toiletry bag has a hanging hook, a clear pocket for liquids under 100ml, and at least one detachable compartment so you can hand half to a partner. Most toiletry bags fail on at least one of those three. This guide covers what separates a real travel toiletry bag from a freebie airline kit. It sits inside our wider travel accessories buyer's guide.
What makes a toiletry bag a travel toiletry bag?
A travel toiletry bag has three features a regular wash bag doesn't: a sturdy hanging hook, a transparent pocket for the airline 100ml liquid rule, and a layout that lets you find the dental floss without unpacking the whole thing. Anything missing one of those three is fine for the gym, not for travel.
The hanging hook is the most underrated. Hotel and Airbnb bathrooms vary wildly in usable bench space, from generous to "where do I put my toothbrush?" A hook fixes the variable by giving you the same vertical bench every time: back of the door, shower rod, towel rail. The bag becomes its own bathroom shelf. Looped fabric hooks bend within months; a riveted steel hook (the Cubey design) lasts the life of the bag.
The transparent pocket exists for one specific reason: airport security. Australian, US, EU, UK, and most other jurisdictions enforce the 100ml-per-bottle / 1-litre-total rule for carry-on liquids. A clear quart-size or 1-litre pocket means you don't dig through the bag at security; you unzip the clear section, drop it in the bin, repack in 20 seconds. The deeper rules below.
What's the difference between a toiletry bag and a wash bag?
None, in plain English. "Wash bag" is the older British term, "toiletry bag" is the American/Australian term, "toiletry kit" implies a slightly more structured product (often with a hanging hook). All three describe the same thing: a soft case for soap, toothbrush, razor, deodorant, and whatever else lives on a bathroom shelf.
The Cubey product uses "Hang-Up Toiletry Kit" because the hanging hook is the design feature. Other brands use whatever term fits their style guide. None of it changes what's inside.
What's the best toiletry bag for travel?
For most travellers, a 3-in-1 hanging design at around 30 x 17 x 10 cm hits the sweet spot: big enough for two weeks of toiletries, small enough for any carry-on, hanging hook handles a full load. Tubular toiletry rolls (the old "dopp kit" cylinder) look stylish, lose to hanging designs on usability. Hard-shell cases protect glass but are bulky.
The Hang-Up Toiletry Kit ($59) is built on the 3-in-1 logic. One main bag at 31.5 x 17 x 10 cm folded, with two detachable smaller pouches that clip out (one fabric, one clear-window TSA-friendly section for liquids) and a steel hanging hook. The detachable bit is what makes it work for couples: you each pull out one of the small pouches, leave the main shell hanging.
The competition tier in Australia: Strandbags house-brand hanging toiletry kits ($35-$60, decent build, lighter fabric), Antler matched toiletry kits ($70-$110, luggage-brand premium), Kathmandu Travel Kit ($45, solid for outdoors travellers), Sea to Summit Toiletry Bag ($35-$50, dry-resistant fabric for hiking). For a tested AU comparison across all of them, see our best travel accessories Australia article.
Hanging vs zipped vs roll: which design?
Hanging is the default for most travellers. Zipped is fine if you always travel with bathroom counter space (luxury hotels, family homes). Roll-up is a niche choice for backpackers who want one item that opens flat across a hostel bunk.
The hanging hook earns its place in 80 percent of bathrooms. The 20 percent where it doesn't (some Japanese ryokan, some camping setups) are the same 20 percent where you'd be unpacking onto a tatami mat anyway. So hanging-or-flat is the practical answer: a hanging bag that also lies flat works in both cases.
The zip-only design (no hook) is lighter by maybe 100g, and that's the whole pitch. Worth it if you're an ultralight backpacker. Not worth it if you're a normal traveller who'd like to find your toothpaste on the second day.
The roll-up design is the dopp kit's modern cousin. Unrolls flat to reveal compartments, rolls up to a tight cylinder. Looks tidy. Tends to lose compression when fully loaded; bottles roll out the side. Worth knowing about, rarely the best buy.
The 100ml rule, in practice
The 100ml rule means: every container of liquid, gel, paste, or aerosol in your carry-on must be 100ml or less, and all containers together must fit inside a single transparent resealable 1-litre bag. Australian Border Force, US TSA, EU, UK, Japan, and Singapore all enforce roughly the same rule. New rules at some UK and EU airports (from mid-2024) lifted the bag requirement for some terminals but the 100ml-per-container limit stayed.
What counts as a liquid: shampoo, conditioner, sunscreen, moisturiser, perfume, toothpaste, mascara, lip gloss, hand sanitiser, contact-lens solution, deodorant aerosol. What doesn't: solid deodorant sticks, soap bars, dry shampoo (powder form), solid moisturiser bars, prescription medication in pill form.
The practical move is to decant. Buy a set of refillable 60ml or 90ml silicone bottles (Muji, Daiso, or Sea to Summit) and decant your shampoo, conditioner, and body wash into them. Saves money over buying travel-sized versions of every product, and means your bag carries the actual stuff you use rather than the cheap travel-size formulations.
Lay all the decanted bottles flat inside the clear section of your toiletry bag, zip it shut. At security, that section comes out, goes through X-ray separately, repacks in 30 seconds. No digging.
How to organise toiletries inside the bag
Three compartments work better than one big pocket. Main compartment: brushes, deodorant, razor, comb. Detachable fabric pouch: medication, contact lenses, lip balm, dental floss (the small stuff that gets lost). Clear liquids section: every bottle under 100ml.
The reason for separation: when you arrive somewhere and want to brush your teeth, you don't want to dig through five days of accumulated bathroom debris. Each compartment has a job. The main bag stays clean even if a bottle in the liquids section leaks.
A few practical tips that don't make most guides. Pack toothbrush head-up in a small cap or sleeve (every chemist sells these for $3). Wrap a thin elastic band around any pump-bottle to lock it closed against in-flight pressure changes. Put a single Ziploc bag inside the toiletry bag for surprises (a leaking bottle, wet floss container, the small soap from a hotel you actually liked).
What about checked-bag toiletries vs carry-on?
If you're checking a bag, the 100ml rule doesn't apply. You can pack a full-size shampoo, a 500ml sunscreen, a 200ml moisturiser. Two cautions: pressure changes still happen in the hold (bottles can burst) and liquid in checked baggage is a documented theft target if it's branded perfume or aftershave.
The practical move on checked toiletries: keep the same hanging toiletry bag but skip the 100ml decant for the items you don't need at security. Use the main compartment for full-size bottles, wrap each in a thin Ziploc or a sock as bag insurance, and stack heavy bottles at the bottom of your suitcase rather than at the top.
For trips longer than a week, the right move is usually carry-on toiletries for the first three days and checked toiletries for the rest. Or shop at the destination. Decanting saves time and weight only up to the point you'd buy local anyway.
FAQ
What's the best toiletry bag for travel?
A 3-in-1 hanging design at around 30 x 17 x 10 cm with a steel hanging hook, detachable smaller pouches, and a clear TSA-friendly section for liquids. Cubey's Hang-Up Toiletry Kit is built on that logic at $59. The brand-tier alternatives are Antler ($70-$110) and Sea to Summit ($35-$50, lighter fabric).
What's the difference between a toiletry bag and a wash bag?
Nothing structural. "Wash bag" is the older British term, "toiletry bag" is the Australian/American term. Same product. A "toiletry kit" usually implies a slightly more structured travel version with a hanging hook.
How do I pack toiletries to comply with airline 3-1-1 / 100ml rules?
Every container of liquid, gel, paste, or aerosol in your carry-on must be 100ml or less, and all containers together must fit inside a single transparent resealable 1-litre bag. Decant your shampoo, conditioner, and body wash into 60-90ml silicone bottles and pack them all flat inside the clear section of your toiletry bag. At security, that section comes out for separate X-ray.
What's the best way to organise toiletries for travel?
Three compartments rather than one big pocket. Main compartment for brushes, deodorant, razor. Detachable fabric pouch for medication and small items. Clear liquids section for every bottle under 100ml. Keep a single empty Ziploc inside for leaks or surprise items.
Is a hanging toiletry bag worth the extra money?
Yes for any traveller staying in hotels, Airbnbs, or hostels. The hook turns the back of any door into your bathroom bench, which fixes the variable of how much usable counter space the bathroom has. Worth $10-$20 more than a flat-zip equivalent.
How big should a travel toiletry bag be?
Around 30 x 17 x 10 cm folded fits most carry-on bags and holds two weeks of toiletries for one person. Smaller (25 x 15 x 8 cm) for weekend trips or men with simpler routines. Larger (35 x 20 x 12 cm) for shared bags between two people or month-long trips with full skincare regimens.
Can I take dry shampoo in carry-on luggage?
Dry shampoo aerosol is a liquid for airport security purposes (the propellant counts), so it has to be under 100ml. Powder-form dry shampoo (yes, exists, Klorane and Batiste make them) is not a liquid and packs in the main compartment without restriction.
What Cubey makes for this
The Hang-Up Toiletry Kit ($59) is the dedicated SKU. 3-in-1 design with two detachable pouches and a clear TSA-friendly section. Steel hanging hook. 31.5 x 17 x 10 cm folded. Fits any carry-on. For a complete travel accessory set, the Wheels Up Bundle ($148) bundles the toiletry kit with the Signature Compression Packing Cube Set and Tech Tidy at 25 percent off. For couples, the Travel Duo Bundle ($200) doubles up.
The practical takeaway
Buy a hanging toiletry bag with a clear liquids section before you buy any of the other "accessories" except packing cubes. The friction it removes from the daily airport-and-bathroom routine is bigger than any single travel-accessory upgrade outside cubes themselves.
