Men's Plus Size T-Shirts in Toronto

A family friend and their family visited Toronto for awhile. They were looking for low-priced plus size t-shirts with Canada printed on them. Never did I think it was that difficult to find nice looking plus size t-shirts for men in Toronto, especially ones with "Canada" printed on them. We ended up buying t-shirts from a dollar store in an Asian plaza in Markham.

I later learned that the family friend was looking for massive t-shirts that are larger than the regular plus sizes found in western malls. If you usually purchase plus size t-shirts for men, where do you buy the shirts from?