I'd just been calling it a sharply tailored blazer in softish fabrics.
Times, Sunday Times
Add a sharp, tailored blazer for a little edge and warmth.
Times, Sunday Times
Wear with a tailored blazer and heels for alt evening attire.
Times, Sunday Times
Smarten up your act in a denim shirt buttoned to the neck and team with a sharp, tailored blazer.
The Sun
A sharp, tailored blazer works well.
Times, Sunday Times