News about variable look for material (5)
I believe the answer is:
nylon
'material' is the definition.
(nylon is a kind of material)
'news about variable look' is the wordplay.
'news' becomes 'nn' (I've seen this in other clues).
'about' means one lot of letters goes inside another.
'variable' becomes 'y' (I've seen this in other clues).
'look' becomes 'lo'.
'y'+'lo'='ylo'
'nn' enclosing 'ylo' is 'NYLON'.
'for' is the link.
(Other definitions for nylon that I've seen before include "The first synthetic fibre" , "Yarn for stockings" , "may be damaged by running" , "A thermoplastic" , "Hosiery material" .)