This is a 1:1 scale Darth Vader helmet.  Can be worn but was always used as a display piece.  Great finish on this one, its made of fiberglass, could use some addon pieces, but overall a fantastic piece.  When I purchased it years ago it had padding on the inside which is still there...I simply never wore it.  Heavy piece, not sure which film its modeled after.  Great opening bid price, happy bidding!