A
military colloquial for their helmets, due to what they are made of. This can also be applied to other protective
gear of the same material, but is mainly applied to helmets due to their more obvious design, and other
gear also including ceramic inserts.
Privates tend to misuse their Kevlars in humorous ways, up to and including
strapping them to their
joints to
play human shuffleboard.
"Grab your Kevlar, we have a convoy in 2 hours"