Kevlar was the first material by Dupont, after steel helmet.
Subsequently, re-engineered, back-engineered, counter-engineered,
came Twaron, Spectra. I think there are a couple more similar
materials for the ballistic helmets. That's probably why it is
called Kevlar helmet as a generic name.
There's another one ...... the Cyalume stick (pronounced
'sai-loom') although they are no longer bought by the Army.
Same like Colgate ........... instead of toothpaste.
