Some protection for the head in an unsafe zone? (3)

I believe the answer is:

fez

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'some protection for the head' is the definition.
I can't tell whether this defines the answer.

'in an unsafe zone?' is the wordplay.
'in' indicates the answer is hidden within the clue.
'FEZ' can be found hidden inside 'unsafe zone'.

Can you help me to learn more?

(Other definitions for fez that I've seen before include "High flat-topped red cap with tassel worn by some Muslims" , "Tasselled hat" , "Middle Eastern headgear" , "Tasselled red cap" , "Egyptian tasseled hat" .)

I've seen this clue in the Evening Standard.

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