Hard-wearing fabric (5)
I believe the answer is:
denim
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hard-wearing fabric</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for denim that I've seen before include "Twill cloth" , "Hard-wearing cloth" , "Hard-wearing material seen in jeans" , "Hard-wearing blue fabric" , "Tough cotton fabric" .)