Garment adaptable to a cover (8)

I believe the answer is:

overcoat

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'garment' is the definition.
(overcoat is a kind of garment)

'adaptable to a cover' is the wordplay.
'to a cover' can be anagrammed to 'OVERCOAT'.
However, I am not sure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for overcoat that I've seen before include "Ulster, for example" , "Clobber" , "Warm garment" , "warmer" , "Outerwear" .)

I've seen this clue in the Evening Standard.

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