Butane canisters are small, pressurized containers filled with butane, a type of hydrocarbon gas. They are commonly used as fuel for portable stoves, lighters, and camping equipment. The canisters are designed to be lightweight and easy to transport, making them popular for outdoor activities. These canisters typically come in various sizes and are made from durable materials to withstand high pressure. When connected to a compatible device, the butane is released and ignited to produce a flame. Proper handling and storage are essential to ensure safety, as the gas is flammable and can be hazardous if not used correctly.