The lining in my Landscape bag is complete. It was a several night project, but I've learned over the years it's better to not rush these things. I used some plastic canvas on the front, back and base. It was lightly sewn to the inside of the bag, and then the lining was sewn in. Best thing is the magnet clasp is attached through the plastic canvas and it creates a nice firm place for the clasp to be attached. Now that I've been successful with my lining, I might try it again!
It's a good way to keep cool in this 90 degree weather.