I'm getting ready to start on several projects and going through my interfacing stash I realized I am almost out of the main interfacing I need. I can not remember the name of it and I'm fairly certain I'm going to have to order it online. I dont recall seeing it at JoAnn's or Hancocks.
It's used in the shoulder construction of men's suits and also often in neckties. I originally purchased it for neckties over 15 years ago. I've included a picture of it. Its a loosely woven non-fusible interfacing of a medium heavy weight. I dont remember the fiber content but it does have little "hairs" that feel similar to a coarse wool. It is fairly soft, not like crinoline.

I would appreciate any help with the name and even better sources. Thank you for your help.