Online classes that teach soft goods (bags) design?

Im a graphic designer by education but Ive slowly over years transitioned into consumer goods, apparel, soft goods, toys, etc. Currently my job has me designing bags like crazy and we do all our production overseas . Anyway… Im looking to increase my knowledge of the proper process, materials, etc. I kinda fell into this and have learned on the job vs having any real training. So Im looking for some courses online or if not online somewhere in the seattle area. (I know longshot)

I don’t really know of any online courses but you might check out Kwantlen Polytechnic, they may have something of interest or may be bale to point you in the right direction. They’re in BC, Canada.

What sort of bags?