Summer fabric (5)
I believe the answer is:
ramie
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">summer fabric</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ramie that I've seen before include "Tough fibre" , "plant" .)