Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Costume (hierarchy name)
5. costume (mode of fashion)
6. [costume by function]
7. protective wear
8. armor
9. [armor by form]
10. body armor
11. [body armor for neck and head]
12. [body armor for the head]

Anotations

Scope note:

Helmets worn by parachutists; of metal with a liner system and chin strap. Often similar in appearance to the combat helmet, but with an extra liner system behind the head and an extra chin piece on the chinstrap.