I recently tried to answer the question.
9 oz is definitely on the light side when it comes to classic flannel suits. In that category nothing can be sculptured and wears like a 14 oz "dry" flannel. The trouble is that most people find them to warm to wear.
The idea and making of this paticular suit was based on a few specific requests from the customer.
He wanted a smooth, easy worn suit with a charked check and a fresh look.
The cloth is a very soft merino wool that melts around the shoulders but it is just heavy enough to get a nice fall. There is no padding in the shoulders and we stryved to keep that whole soft feel thoughout the making, aiming for the suit to become a second skin .
We added the genuine horn buttons for the suit to conect well with brown suede shoes and threw in the vertical button hole on the lapel to get some attention from those who notice the details.
To compensate for the lack of durability he ordered two pair of trousers .