Puckster wrote on Dec 8^th, 2012 at 4:48pm:

Interesting discussion.  Are the Ostrom packs waterproof, or do they require plastic liners?  I'm curious why no one commented on the waterproof genre of canoe packs, like the North49 Waterproof Canoe Pack 120 L.  I have no experience with these "rubber" packs, but the waterproof nature of them is, on the surface, appealing.  They do look bulky and uncomfortable, but again, I have no firsthand experience.  prouboy

I have used a Sealine pro pack for quite a few years. I like it really well......excellent belt and suspension system.......shoulder straps easily adjustable. I don't baby mine and have yet to put a hole in one. I would be reluctant to take it on an extended trip into places where portages were slim to none. Set it down on a beaver cutting and you have an instant problem.........

But in friendly places like the Quetico it seems to be the ticket. I have added a few smaller duffels (watershed) as well. Nice to not have to worry about anything getting wet, just load and go......watertight even in a dunking  ;)