Returning prisoner changed shoes for protective footwear (8)
I believe the answer is:
galoshes
'protective footwear' is the definition.
'galoshes' can be an answer for 'footwear' (I've seen this before). I'm not sure about the 'protective' bit.
'returning prisoner changed shoes' is the wordplay.
'returning' is a reversal indicator.
'prisoner' becomes 'lag' (slang term).
'changed' indicates an anagram.
'lag' backwards is 'gal'.
'shoes' anagrammed gives 'oshes'.
'gal'+'oshes'='GALOSHES'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for galoshes that I've seen before include "Overshoes usually made of rubber" , "footwear" , "Go hassle to get overshoes" , "Waterproof overshoes" .)