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A waterproof bag is a flexible container that is sealed in a watertight manner. Waterproof bags are commonly used for kayaking, canoeing, rafting, canyoning, and other outdoor activities where delicate items get wet, as well as extreme sports like skiing and snowboarding. Dry bags are used to protect electronics from water. They are also used to keep sleeping bags and spare clothing from getting wet, such as in a camping environment.