Flimsy fabric (4)
I believe the answer is:
lame
I believe this clue is a double definition.
'flimsy' is the first definition.
(thesaurus)
'fabric' is the second definition.
(lame is a kind of fabric)
(Other definitions for lame that I've seen before include "Imperfect - material" , "Flimsy, as an excuse" , "Halt" , "Unable to walk without difficulty" , "Thin plate" .)