A plastic material is any of a wide range of synthetic or semi-synthetic organic solids that are moldable. Plastics are typically organic polymers of high molecular mass, but they often contain other substances. They are usually synthetic, most commonly derived from petrochemicals, but many are partially natural.
A jerrycan (also written as jerry can or jerrican) is a robust fuel container originally made from pressed steel. It was designed in Germany in the 1930s for military use to hold 20 litres (5.3 U.S. gal) of fuel. The development of the jerrycan was a significant improvement on earlier designs, which required tools and funnels to use.