If your suitcase comes home half-unworn, you're in good company. A Global Rescue survey found that 32% of travellers admit to overpacking — and it costs more than just lugging a heavy bag around. Overweight luggage means airline fees, and an overstuffed carry-on can get you pulled aside at security, since TSA agents often flag bulging bags because X-ray machines can't see clearly through them.
The fix making the rounds among frequent flyers is a simple formula: the 1-2-3-4-5-6 rule. Frequent flier Daniel Green explained it to Business Insider in October 2022: pack one hat, two pairs of shoes, three bottoms, four tops, five pairs of socks, and six pairs of underwear. That's it. Roughly a week of clothing that mixes and matches, no 'just in case' pile.
Yes, the trade-off is re-wearing trousers and finding a laundromat on longer trips. But as the logic goes, a quick wash beats paying excess baggage fees or holding up the security line.
To make the numbers work, the trick is choosing versatile pieces. Pick one comfortable pair of shoes for daytime walking and one dressier option for evenings. For tops and bottoms, aim for a blend of casual daytime wear and something smarter for nights out — and don't be afraid to swap items, like subbing a dress for a pair of trousers. Keeping a general packing list helps you stay honest about what actually earns a spot in the bag.
Travel writer Ben Nickel-D'Andrea put the mindset plainly when speaking to The New York Times in 2017: drop the 'just in case I need it' category entirely. If you genuinely end up needing something, you can almost always buy it at your destination.
The same ruthless filter applies to toiletries — pack the absolute essentials only, and restock basics like shampoo once you arrive.
Why should travellers care? Because this is one of the few packing methods simple enough to remember without a spreadsheet. It works for a weekend in the mountains or two weeks in the Caribbean, it keeps you under airline weight limits, and it fits carry-on-only travel — which means cheaper fares, faster arrivals and no lost-luggage stress. Becoming a light packer takes a few trips of practice, but a fixed formula removes the guesswork that usually leads to stuffing in one extra outfit 'just in case'.
For anyone who has ever paid an overweight bag fee, stood at a hotel wearing one of five unworn shirts, or wrestled a bulging carry-on into an overhead bin, counting to six might be the easiest travel upgrade going.
