Final Fantasy/Helmets

Helmets are considered by many heroes to be necessary to survival when adventuring, as they protect the warrior's head from attacks. Most characters cannot wear stronger helmets than the Cap, though Fighters and Ninja have access to three helmets and the Knight to five. Each adventurer may carry up to four pieces of armor (beware, this includes armor, shields, and gauntlets as well) but may only equip one helmet.

Headgear

 * Cap (Leather Cap)

Helmets

 * Wooden Helmet (Helmet)

Heavy Helmets
In Final Fantasy Origins, Helmet refers specifically to the Wooden Helmet.