In a bout we are able to last longer (7)
I believe the answer is:
outwear
'last longer' is the definition.
(I've seen this before)
'in a bout we are able' is the wordplay.
'in' indicates the answer is hidden within the clue.
'OUTWEAR' is hidden within 'bout we are able'.
'to' acts as a link.
(Other definitions for outwear that I've seen before include "Last longer than others" , "Drain" , "Top dressing" , "ride" , "Exhaust" .)