Sleeve ends rub off first of marks on shoe (5)
I believe the answer is:
cuffs
'sleeve ends' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for cuffs that I've seen before include "bracelets" , "Ends of sleeves" , "Sleeve folds" , "Open-handed blows" , "Sleeve-ends" .)