Moving brass around harbour in activewear (6,3)

I believe the answer is:

sports bra

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'activewear' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'moving brass around harbour' is the wordplay.
'moving' indicates an anagram (letters are moved around).
'around' means one lot of letters goes inside another.
'harbour' becomes 'port' (I've seen this before).
'brass' with letters rearranged gives 'ssbra'.
'ssbra' going around 'port' is 'SPORTS BRA'.

'in' acts as a link.

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I've seen this clue in the Sydney Morning Herald.

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