Follow the 5-4-3-2-1 packing trick, where you pack five tops, four bottoms, three dresses, three pairs of shoes, two swimsuits, two bags, and one of each of a few miscellaneous accessories. If you're opting for a carry-on, mix and match items in your travel capsule and have a versatile wardrobe.

Packing for 10 days in a single carry-on in 2026 is an exercise in "Capsule Wardrobe" design and space optimization. The "gold standard" strategy is the 5-4-3-2-1 rule: 5 tops, 4 bottoms, 3 pairs of shoes (including the ones you wear), 2 dresses/suits, and 1 set of accessories. Stick to a single color palette (e.g., navy, white, and tan) so every piece is interchangeable. Use compression packing cubes to remove excess air and keep items organized. In 2026, "merino wool" garments are highly recommended for long trips because they are odor-resistant and can be worn multiple times without washing. For your "Personal Item," use a backpack with a dedicated tech compartment to keep your liquids (3-1-1 bag) and electronics easily accessible for security. A high-value "pro-tip" for 2026 is to wear your heaviest items—like your coat and boots—on the plane to save weight and space. If you find you’ve overpacked, remember that most 2026 "boutique" hotels and even high-end hostels offer "wash-and-fold" services, allowing you to effectively pack for 5 days and "reset" halfway through your trip.