Most people picture ancient Greek warriors in heavy bronze muscle armor, but a huge number of hoplites and Macedonian soldiers actually fought wearing something that looked almost… like hardened fabric. The linothorax—literally “linen cuirass”—was a layered armor made from many sheets of linen glued or stitched together into a stiff, protective shell. When compressed and bonded, these linen layers could absorb and disperse the force of arrows and spear thrusts far better than you’d expect from “