...I'm certainly going to bffg hell...two bag threads in a week!

Anyway, since many of us are messenger and/or designers, I'm wondering if any of y'all has a lead on nice waterproof tube cases, such as for holding rolls of blueprints or posters or etc.? I've got a new client that has taken to giving me lots of big rolly stuff to carry through the rain and I'd rather not lose the client by ruining their stuff.