Some of these would also probably work.
These look like woolen flannels from the photos, but the weave is described as "twill". Does that imply that they are actually worsted?
My bad. I read "0303", which is black. 330 is much nicer. @Concordia, you don't think that would look good with a navy blazer? I like 328 better, though.
Thank for the link, by the way. The danger of browsing a section like that is of being seduced by cloth at what seems like a bargain. And I was so seduced. I picked up 4.5m of a Worsted Alsport (#7607). Because, you know, I need more unfunded liabilities. Would've picked up Sandringham #105383, too, but there's not much you can do with 1.4m.