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How much clothing to pack

The starting rule is 1 outfit per day + 1 or 2 spares for surprise stains or weather. On a 7-day trip that comes to 8–9 sets. Climate changes the math. Cold weather means layering (base layer, insulation, shell), which adds bulk without adding many distinct outfits, while hot weather calls for light, breathable pieces and one extra change a day for sweat. Where laundry is available every 5–7 days (hotel, hostel, Airbnb), stop at 7 outfits no matter the trip length; the capsule wardrobe approach (Project 333) keeps everything mix-and-match. Don't forget the airline limits. Carry-on 7–10 kg is standard on Brazilian carriers (Latam, Gol, Azul), and checked 23 kg covers international economy. Low-cost airlines (Ryanair, EasyJet, Wizz) run tighter carry-on rules, sometimes 7 kg or 1 piece only.

Applications

Flying while keeping weight and fees down, backpacking with a single 40 L pack, business trips (a suit plus 2–3 shirts), beach holidays, ski trips, and staying within a low-cost airline's restrictions.

FAQ

What if I'll have access to laundry? Pack for 5–7 days no matter how long you're away and wash partway through. It saves both bag weight and space.

How many shoes? Two does it most of the time: a comfortable walking pair and a dressier or sport-specific one. Wear the heavier pair on the plane.

How do I avoid excess baggage fees? Weigh the bag at home, shift heavy items into the carry-on (staying under the 10 kg limit), and wear the bulky stuff (coat, boots) while boarding.