Baby's soft shoe (6)
I believe the answer is:
bootee
'baby's soft shoe' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for bootee that I've seen before include "Baby's woollen shoe" , "Baby's footwear" , "Knitted foot-covering" , "Jolly" , "Soft, woolly baby's shoe" .)