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The Flexbag is a fuel bottle designed for use with such portable devices as camping stoves and propane lights. It consists of a tubular body strengthened by braces. A belt attached to the bottle can be used to compress it, which eliminates the need for a pump. Thus, the Flexbag is more durable and less likely to break down. If necessary, the bottle can also be compressed by using a weight (e.g. backpack). Thanks to its flexible body, the bottle volume can be adapted to its actual contents. This means that, when the bottle is not filled to capacity, it then takes up less space in your luggage.