Got back small clothes (4)
I believe the answer is:
togs
'clothes' is the definition.
(togs can informally mean clothing)
'got back small' is the wordplay.
'back' says the letters should be written in reverse.
'small' becomes 's' (abbreviation - e.g. clothes size).
'got' back-to-front is 'tog'.
'tog'+'s'='TOGS'
(Other definitions for togs that I've seen before include "Clothes (informal)" , "Clothes (sl.)" , "garment" , "costumes [STRINE]" , "Gear" .)