Island in Love' sadly produces flimsy material (5)
I believe the answer is:
voile
'flimsy material' is the definition.
'voile' can be an answer for 'material' (voile is a kind of material). I am not certain of the 'flimsy' bit.
'island in love' sadly' is the wordplay.
'island' becomes 'i' (geographical abbreviation).
'in' is an insertion indicator.
'sadly' is an anagram indicator.
'love' anagrammed gives 'vole'.
'i' inserted inside 'vole' is 'VOILE'.
'produces' acts as a link.
Can you help me to learn more?
(Other definitions for voile that I've seen before include "fine material" , "Light semi-transparent fabric" , "Sheer fabric" .)