The point of carry-on packing is not the bag. The point is that you get off the plane, walk out of the terminal, and start your trip. No belt in a tray, no bag in a hold, no waiting.
The reason people fail at it is the same reason they fail at most wardrobe questions: they pack for the version of the trip they wish they were having, not the trip they are actually about to have. Here is a method that works for a five-day working trip and packs into a standard cabin bag.
Start from the shoes, not the outfits
Shoes are heavy, bulky and irreplaceable if wrong. Two pairs is your budget: one on your feet, one in the bag. Both should be neutral enough to wear with everything else you pack.
For a working trip in autumn or spring, the honest pair to wear is a leather trainer or a low leather boot. The pair in the bag is either a dressier leather (loafer, Derby) or a technical trainer for running, depending on whether you want to look tidy or want to sweat. You do not have room for both.
Pick a two-colour palette
Almost every carry-on failure is a palette failure. You packed one grey blazer, one navy blazer, black trousers, brown trousers, and now nothing goes with anything.
Two colours only. Common pairings that hold up: navy and stone, black and grey, olive and cream, brown and ivory. Everything you pack should live inside those two. This is the rule that unlocks the maths.
One colour rules the trousers. The other rules the tops. The third colour is the shoes and belt, and it is chosen to bridge them.
The five-day, one carry-on packing list
Assume you are wearing an outfit on the plane. Then in the bag:
- Two pairs of trousers (both in the primary colour, one heavier weight and one lighter).
- Four tops: two shirts, two knits. All in the secondary colour or a very close cousin.
- One jacket that is neither of the two colours but works with both (a natural linen, a stone wool, a mid-blue overshirt).
- One pair of shoes (the second pair; the first is on your feet).
- One belt, one bag insert, socks, underwear, a laundry pouch for what comes back dirty.
- One dress or one blazer for the evening, folded flat.
That is it. Two trousers times four tops is eight combinations, which is more than enough for five days. Repeat one on the way home if you didn't get it dirty. Nobody in the meeting will notice.
Rolling vs folding
Softer pieces (tees, knits, cotton trousers) roll well and take less space. Tailored pieces (a wool blazer, a shirt that cannot be creased) should be folded flat, buttoned once, and placed on the top layer. Shoes go along the hinge side, soles facing out, stuffed with socks.
Toiletries: the airport tax
The 100ml rule is the biggest space stealer in the bag. Buy solid versions where possible: shampoo bar, solid deodorant, bar soap for shaving. A folding toothbrush and a razor with a proper cap. Everything else, get from the hotel or a corner shop on arrival. You will not miss it.
The evening piece
One dress or one blazer, folded on top. You are packing this for the meal on day three that you did not know you would be invited to. If you never wear it, no loss; it did not take space you needed.
The tech pouch
One universal charger, one short lightning or USB-C cable, one long one. A small pouch with an eye mask, ear plugs and paracetamol. This is the difference between a jet-lagged Tuesday and a bearable one.
The mental shift
You will pack fewer things than feels safe. That is the point. If you truly need a piece you did not bring, buy it there, wear it, bring it home. The occasional emergency purchase is cheaper than dragging a checked bag through five days of your working life.
