Coolus () is a commune in the Marne department in north-eastern France. It gave its name to the

Coolus helmet The Coolus helmet (named for Coolus, France) was a type of ancient Celtic and Roman helmet. It was typically made in bronze or brass and, like the Montefortino type with which it co-existed, was a descendant of Celtic helmet types. The e ...

, a type of ancient Celtic and Roman helmet.

See also