don't be this guy
https://www.ec.gc.ca/alef-ewe/default.asp?lang=En&n=407DCE68-1
Found the memo
http://www.cbsa-asfc.gc.ca/publications/dm-md/d19/d19-7-1-eng.pdf
That's about the size of it. Your best bet is to contact the CBSA and ask for the memo concerning importation of such things and see if a license is required.
You make leather water resistant but never totally water proof. Assuming the jackets will get washed once and a while test a few pieces out in the washing machine!