Blazers are usually made from worsted serge, worsted hopsack or flannel. Some suggest that a serge weave is the most traditional cloth choice of the three mentioned. There is another Fox serge around 17oz with a very prominent twill that Gennaro Paone made up for me as a db blazer. It's an awesome cloth that comprises of worsted and woollen yarns. Have a look at it.
2/2/15 at 3:59pm