type timtex into the search bar, the company will come up, i ordered a whole bolt of timtex from them a few years ago when my daughter wanted 65 fabric bowls at the reception...it was very cost effective getting it that way.
it is the same interfacing used in the bill of baseball caps.
you can also get fusable timtex which i have mixed feelings about...we have 2 quilt shops in the area which carry it. but it is less expensive to order direct from them.