72" Shawl

What size is this considered? I am going to make a summery shawl for my dads girlfriend and she wears around a large and extra large…

I’m 5’7" and wear XL, that’s what I’d consider a good size for me. Is the pattern a rectangle or triangle? If a rectangle, you might consider just a wee bit longer, it’s easier to throw one end over the shoulder when they’re long.