New shoes, possibly of rubber (5)
I believe the answer is:
hoses
'possibly of rubber' is the definition.
I can't tell whether this definition defines the answer.
'new shoes' is the wordplay.
'new' indicates an anagram.
'shoes' anagrammed gives 'HOSES'.
Can you help me to learn more?
(Other definitions for hoses that I've seen before include "Lengths of piping" , "Flexible pipes for conveying liquids" .)