Made from 60% cotton 40% polyester and paying homage to higher learning on Krypton, the Superman Symbol Letterman Jacket features the famous symbol for the House of El! Ah yes, the parties at the House of El went forever and they would always get super crazy and tell everybody how the world was going to explode! They should have probably waited till we were sober to drop that bombshell because it mainly sounded like a joke. Mainly. Still, you can stay pretty warm with the Superman Symbol Letterman Jacket while you rocket through space on a chunk of the former planet!