A galea was a Roman soldier's metal helmet, most famously worn by the heavy infantry of the legions. Some gladiators, specifically murmillo (myrmillo), also wore bronze galeae with face masks and decorations, often a fish on its crest. While details varied over time, all Roman galeas from the Republic era through the Principate featured the same basic design - a bowl to protect the skull, a neck guard, a deflector band to protect the forehead and cheek plates to protect the face. The exact form, type of metal, and design of the helmet varied over time, between differing unit types, and also between individual examples – pre-industrial production was by hand – so it is not certain to what degree there was any standardization even under the Roman Empire.