Last longer than a coat perhaps (7)
I believe the answer is:
outwear
'last longer' is the definition.
(I've seen this before)
'than a coat perhaps' is the wordplay.
'than' becomes 'out' (I can't explain this - if you can you should give a lot more credence to this answer).
'a coat perhaps' becomes 'wear' (coat is a kind of wear).
'out'+'wear'='OUTWEAR'
Can you help me to learn more?
(Other definitions for outwear that I've seen before include "Exhaust" , "Drain" , "Last longer than others" , "Top dressing" , "ride" .)