Consumer's after small western pullover (7)
I believe the answer is:
sweater
'pullover' is the definition.
(I've seen this before)
'consumer's after small western' is the wordplay.
'consumer' becomes 'eater' (eater is a kind of consumer**).
'after' means one lot of letters go next to another.
'small' becomes 's' (abbreviation - e.g. clothes size).
'western' becomes 'w'.
's'+'w'='sw'
'eater' after 'sw' is 'SWEATER'.
(Other definitions for sweater that I've seen before include "person in a sauna?" , "Top" , "Knitted upper garment" , "Woolly" , "One visibly too hot" .)