Packing Cubes 101: The Smartest Way to Organise a Suitcase

If you've ever pulled everything out of your suitcase to find one thing at the bottom, packing cubes fix exactly that. Instead of one large shifting mass of clothes, you get several structured, labelled blocks you can lift out individually — like drawers inside your bag.

Once you pack with cubes on a single trip, going back to loose packing starts to feel like a step backward.

What a packing cube actually is

A packing cube is a small, structured fabric pouch — usually mesh-topped — that holds one category of items and compresses them into a fixed shape. Instead of one large suitcase interior where everything shifts and settles into a single mass, you get several smaller, predictable blocks that stack like drawers.
The shift this creates is simple: you're no longer unpacking your whole suitcase to find one item. You're lifting out one cube.

Why packing cubes work better than rolling or folding alone

Rolling clothes is a real space-saver, and most people who use packing cubes still roll inside them. But rolling alone doesn't solve the bigger problem — loose items in a suitcase migrate during transit. Every lift, drop, and direction change shifts the contents, so what was neatly arranged at home is a jumble by the time you land.

Cubes hold their shape and position regardless of how the suitcase gets handled. Since each cube is compressed and zipped, the contents stay exactly where you packed them — and the cubes themselves stay where you placed them in the case.

Compression cubes vs standard cubes: Compression cubes add a second zip that collapses the cube by 20–30% — useful for bulky items like hoodies or knitwear. Standard cubes (like Assembly's) organise without compression, which is enough for most trips and keeps the cube lighter and easier to access mid-journey.

How to actually organise by category

The real value of packing cubes shows up when you assign categories deliberately, rather than just splitting clothes evenly across cubes.

Clothes by type, not by day.

Group tops in one cube, bottoms in another, innerwear or socks in a smaller one. Packing by outfit sounds intuitive but falls apart the moment your plans change.

Shoes in a dedicated cube.

Assembly's shoe cube keeps footwear separate from clothing — no bag lining that smells like the bottom of your sole, no dirt transfer to the clothes sitting next to it. It fits most adult footwear flat.

Toiletries in a waterproof-pocket cube.

Assembly's toiletry cube has a waterproof inner pocket for anything that could leak — shampoos, serums, sunscreen. Keep this near the top of the case or in an outer compartment since it's the cube you'll need fastest after landing.

Electronics and cables separately.

A small cube or pouch for chargers, cables, and adapters means you're never digging through clothing to find a charging cable at a layover.

A dirty laundry cube for longer trips.

An empty cube reserved for worn clothes on the way back keeps clean and used items from mixing in the same space.

Quick size guide: Small cube (10L) for innerwear and cables. Medium (15–20L) for tops. Large (30L+) for bottoms and bulkier layers.

What size packing cubes fit in a cabin bag?

A cabin-sized bag typically fits two medium cubes (15–20L each) plus a small electronics pouch without forcing the zip. This is why Assembly's cabin shell is designed to take exactly this setup — the cubes are sized to nest inside Assembly's own luggage line, so there's no guessing whether the cube will fit.

In a medium check-in, four to five cubes gives you proper categorisation without wasted space. For Assembly's full Travel Set (cabin, medium, large), assign one cube system per bag — it means packing for a family trip doesn't involve negotiating whose clothes go where each time.

Unlike generic cubes sold separately, Assembly's cubes are sized to nest inside their own cabin and check-in shells — no measuring required.

Assembly ranges that come with packing cubes

Assembly's Rover, Vintage, Iris, Flowe, and Oblique luggage ranges each come with a complimentary set of 3 packing cubes — one for clothes, one for shoes, one for toiletries with a waterproof inner pocket. It's the fastest way to start a cube system without buying pieces separately, and everything is already sized to fit the case it ships with.

If you already own Assembly luggage and want to add cubes, the sets are available standalone. Either way, the brief is the same: one cube per category, one case per trip, nothing shifting between check-in and arrival.

A simple way to start

You don't need a full cube system on day one. Start with two — one for tops and bottoms, one for electronics and toiletries. Once you feel the difference on a single trip, expanding the system to cover shoes, laundry, and accessories becomes an easy next step rather than a habit you have to force.

FAQs

Packing cubes don't just keep a suitcase tidy, they keep your trip predictable, which is the part that actually matters once you're three time zones from home. That's the brief Assembly builds every cube around.