"I would suspect that this is the reason. I have had my poptop up in
torrential rain many times and the interior remained quite dry."
- Ron Salmon

......... ditto. I've never had rain come in the three van's I've had, and I
now have the cotton canvas 3-window and have been in several heavy rains
with no leakage. I't a nice, snug feeling to have it blowing and really
pouring out and be dry and warm inside.

Bob