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A packing cube (or packing square, packing pouch) is a small bag designed to organize and compartmentalize clothes inside luggage, as well as to compress clothing to ensure optimum use of space. ^[1]

Packing cubes are used by backpackers, ^[2] business travelers, ^{[3] [4]} and holidaymakers. Packing cubes can also be used to organize items in the home such as crochet supplies, linens and winter clothing. ^[5]

They are meant to replace the classical heavy bags with fixed compartments that cannot be customized to accommodate the different needs of travelers. ^{[6] [7]}

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