Soft flat hat (5)
I believe the answer is:
beret
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">soft flat hat</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 beret that I've seen before include "Felt hat" , "Flattish round hat" , "Flattish felt cap" , "Soft brimless cap" , "Round, brimless cap" .)