To pack a duffel bag for a two-week trip, you must utilize packing cubes and the "rolling" method to maximize the bag's unstructured space. Start by creating a capsule wardrobe where every top matches every bottom, aiming for about 5–7 days' worth of clothes and planning to do laundry once. Place heavy, bulky items like shoes and toiletry kits at the bottom (the side with wheels or the base) to keep the bag stable and prevent it from becoming "top-heavy." Roll your softer items like t-shirts and leggings into packing cubes to prevent shifting. Utilize the "corners" of the duffel for socks and underwear. If your duffel has external pockets, use them for items you need quickly, like a light jacket or travel documents. Because duffels lack a hard shell, wrap any fragile items in thick clothing for padding. In 2026, using a 45-liter to 60-liter duffel is the "sweet spot" for a two-week journey, allowing you to fit everything without exceeding the 50-lb weight limit common for checked luggage.