How to Pack Packing Cubes Properly (Step-by-Step)

By the end of this guide you'll have a fortnight's worth of clothes packed into a carry-on, sorted by category, compressed flat, and ready to grab without unpacking the whole bag at the hostel. Allow about 15 minutes the first time you try it, dropping to under 10 once the routine sticks.

Most retailers sell cubes and stop there. The method is what makes them work. Eight steps below, with the why behind each one so you can adapt them to your bag. New to cubes? Start with the Australian buyer's guide to packing cubes and come back here for the technique.

What you'll need

• A set of packing cubes, ideally with a compression zip. The Signature Packing Cube Set ships six pieces: two large, one medium, one small, a shoe bag, and a drawstring laundry bag.
• The clothes you're actually taking on the trip, laid out flat on a bed or the floor. Lay them out first. Do not pack straight from the wardrobe.
• A hard surface to roll on. A bed works, a clean floor works better.
• Optional: a small luggage scale if you're flying weight-limited.
• Optional: a Hang-Up Toiletry Kit and a Tech Tidy Travel Organiser to handle the non-clothing items the cubes won't.

No tools required. Cubes aren't a power-tool job.

Step-by-step

1. Choose cube sizes for your bag

Match cube footprint to bag footprint before you put anything inside. A large compression cube at 37.4 x 24.9 x 12 cm fits flat across the long axis of most 40L carry-ons. A medium fits two-up across a 65L check-in. Small cubes slot into the corners. If the large cube doesn't lie flat in your bag, you've picked the wrong size and you'll lose space to wasted air around the edges.

Why: The whole point of a cube is to fill a rectangle with another rectangle. Curved or oversized cubes waste 10 to 20 percent of your bag volume on dead air.

2. Sort clothes by category, not by day

Make piles on the bed: tops, bottoms, underwear and socks, sleepwear, swim and gym, structured items (shirts, dresses, blazers). One pile per cube, roughly. This is the load-out, and you only do it once per trip.

Why: Sorting by day creates seven micro-piles you have to dig through every morning. Sorting by category creates four cubes you grab from. By day three of any trip, the category system wins on speed and on tidiness.

3. Ranger-roll the soft clothes

Lay each soft item flat, fold the bottom hem up about 5 cm, then roll from the top down toward the cuff. Tuck the rolled body into the folded hem to lock it. T-shirts, merino, athletic wear, denim, sleepwear, all roll. The roll should be tight enough not to unravel when you pick it up.

Why: Rolled cylinders sit next to each other with no wasted gaps. Flat-folded clothes leave air pockets between the layers. A loaded cube of rolls compresses about 30 percent better than the same cube full of flat-folded items.

4. Fold the structured items flat

Blazers, dress shirts, linen suits, anything starched or tailored, fold along the existing seams and keep them flat. Lay them as the top layer of a cube, on top of the rolled soft items.

Why: Rolling structured fabric creates hard creases that don't hang out. The flat-on-top layout keeps the structured item under the lid of the cube where it won't get crushed by the compression flap.

5. Layer heaviest at the bottom, lightest on top

Inside each cube, put denser items at the bottom and lighter ones on top. Jeans first, then t-shirts, then sleepwear. For the cubes themselves, the heavy cube goes at the bottom of the bag (more on that in step 7).

Why: Compression works downward. Squashing a feather-light merino layer onto a folded jean stack squashes the merino. Reverse the order and the jeans squash the merino back, which is what you want for space saving.

6. Zip the compression flap

With each cube loaded, run the second zipper around the compression flap. Push down on the centre of the cube with one hand while you pull the zip with the other. The cube should drop about 30 percent in vertical depth. If it doesn't, the cube wasn't packed tight enough underneath, so unzip, redistribute, and try again.

Why: The compression flap only works if there's enough volume to compress. A half-loaded compression cube saves no space. Fill it first, then compress.

7. Pack the cubes into the bag in load order

Heaviest cube at the bottom of the suitcase (usually jeans and shoes). Medium-weight cubes in the middle. Lightest cube on top with the structured items. If you're carrying on, put the cube you'll need first (usually toiletries or sleepwear) on top for quick access at the hotel.

Why: Weight distribution stops the bag toppling on its wheels, and load order means you don't unpack the whole bag to reach the cube you need on night one.

8. Designate one cube for dirty laundry

Empty the smallest cube before you leave (or pack it with socks for outbound, then empty it on day one). That cube is now your dirty-laundry cube for the rest of the trip. Soiled clothes go in, the cube zips shut, and the clean cubes stay clean. The set's drawstring laundry bag works for the same job if you'd rather keep all six cubes for clean clothes.

Why: Mixing dirty with clean inside one cube ruins both. A dedicated cube (or the laundry bag) keeps the system clean for the whole trip and avoids the day-12 hostel moment where every cube smells like a gym sock.

Common mistakes to avoid

• Packing the cube loose, then trying to compress. Compression cubes need to be packed tight before the flap zips. A loose load means a useless flap.
• Forcing the zip. SBS zips on a Cubey cube take repeated hard pulls without splitting, but if the zip won't move, the cube is overpacked. Remove one item and try again.
• Using the largest cube for socks. Match cube size to category volume. Socks go in the small cube. The large cube is for jeans and bulky tops.
• Skipping the laundry cube. Mixing dirty with clean is the single most-regretted decision in any cube system.
• Rolling the structured shirt. It will crease. Fold along the seams and lay flat.

Variations

Carry-on only (40L)

Three cubes, max. One large for clothes, one medium for underwear and sleepwear, one small for the laundry-cube job. Compression is non-negotiable here. The space saving is the difference between fitting a fortnight and checking a bag.

Long-haul check-in (90L)

Five or six cubes. Two large (one for tops, one for bottoms), one medium (underwear, sleepwear), one small (swim, gym), the shoe bag, and the drawstring laundry bag. Compression still helps but you're less weight-constrained, so pack to the cube shape rather than the cube limit.

Packing for kids

One cube per child, per category. A small cube per kid for daily outfits, plus a family-shared medium for swim, sleep, and spare layers. Label the cubes with a tag if you have more than one child of the same age. Kids' clothes are small enough that a single medium cube can hold a week.

Backpacking

Pack the cubes top-down rather than front-back. Heavy items at the bottom of the pack, medium-weight cubes in the middle, and the cube you'll grab first at the top. Compression cubes work better in panel-load and rolltop packs than they do in tapered top-loaders.

FAQ

How do I use compression packing cubes properly?
Sort by category, roll the soft clothes, fold the structured ones flat on top, load the cube tight, then zip the compression flap. Loose loads don't compress. Tight loads drop about 30 percent in vertical depth when you run the second zip.

How do I separate dirty laundry inside packing cubes?
Dedicate one cube (usually the smallest) as the laundry cube. Empty it before you fly, then fill it with soiled clothes as the trip goes. The drawstring laundry bag in the Cubey set does the same job if you'd rather keep all six cubes for clean items.

Should I roll or fold inside a packing cube?
Roll the soft clothes, fold the structured ones. T-shirts, merino, sleepwear and denim roll well. Blazers, dress shirts and linen suits fold flat and go on top.

How long does it take to pack a cube set?
About 15 minutes the first time, under 10 once you're used to it. The slow step is the initial category sort. Once that's done, rolling and loading is fast.

Do compression cubes ruin clothes?
Not for soft fabrics. Cotton, merino, fleece and synthetics handle compression for days without complaint. For tailored or starched items, pack flat in a regular cube or as the top layer of a compression cube.

Can I use the same cubes for a weekend and a fortnight?
Yes. You don't buy more cubes for a longer trip, you wash mid-trip and reuse the same set. The full six-piece kit covers every trip length from a weekend to three weeks. For sizing by trip length, see the cubes-per-trip cheat sheet.

What Cubey makes for this

The Signature Packing Cube Set is built for the eight-step method above. Six pieces in the set: two large compression cubes, one medium, one small, a shoe bag, and a drawstring laundry bag. SBS compression zips throughout, sized to fit flat across the long axis of a 40L carry-on. $99 in sand or black.

Pair it with the Hang-Up Toiletry Kit for the non-clothes items the cubes don't handle, and the Tech Tidy Travel Organiser for cables and chargers. The three together cover everything you'd otherwise leave loose in the bottom of the bag. For the regular-vs-compression breakdown, the compression cube article runs the actual experiment.

Roll the clothes, zip the cubes, then go.