Linothorax construction with alternative fabric

[Dan Howard]

Xenophon says that the Armenians had linen armor that reached their groin, which means they must be flexible.

Not really. Some armour designs incorporated a rigid panel hanging off the bottom of the cuirass to cover the lower stomach and groin. In Greek it was called a 'mitra'. Some designs incorporated a flexible section covering the stomach and groin but the rest of the cuirass was rigid. In English these were usually called 'faulds'.