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A wash bag is a small, portable bag designed to hold personal hygiene items such as toothbrushes, toothpaste, soap, shampoo, and other toiletries for use while traveling or in communal living situations. Typically made from waterproof materials such as plastic or nylon, a wash bag helps to keep these items organized and separate from clothing and other belongings in a suitcase or backpack. Wash bags often feature multiple compartments, pockets, and hooks for hanging, and may come in a variety of sizes and styles to suit individual needs and preferences.