Those who dare put on hot band (4)
I believe the answer is:
sash
'band' is the definition.
(sash is a kind of band)
'those who dare put on hot' is the wordplay.
'those who dare' becomes 'sas' (Special Air Service has the motto 'Who Dares Wins').
'put on' is a charade indicator (letters next to each other).
'hot' becomes 'h'.
'sas'+'h'='SASH'
(Other definitions for sash that I've seen before include "Style of window" , "Sliding window frame" , "Brown bread for waist or shoulder" , "Cummerbund" , "Baldrick" .)