Footwear in moccasins and a loafer (6)
I believe the answer is:
sandal
'footwear' is the definition.
(sandal is a kind of footwear)
'in moccasins and a loafer' is the wordplay.
'in' says the answer is hidden in the clue.
'SANDAL' is hidden in the letters of 'moccasins and a loafer'.
(Other definitions for sandal that I've seen before include "Informal shoe" , "One can go on foot" , "Item of footwear" , "Light strapped shoe" , "Light open-toed shoe" .)