Rolltop Dry bag Backpacks?

I've seen a couple people cragging with big rolltop dry bag backpacks. While they obviously don't offer a ton of support, they've just a giant bag to drop your stuff in if you don't need to organize a ton (which I generally don't do anyway), kind of like a big haul bag, and they're waterproof to the max. I've found SealLine online, but I know I saw a couple other brand names that I just can't remember now. Any suggestions?

NRS. Use it for everything. goes from raft to crag.

Check it out:
nrsweb.com/shop/product.asp…

Can be a pain, they are somewhat fragile in nature. Especially when you stuff them with metal, as in climbing gear. You will find small holes in them quickly.

I've had many for canyoneering and would advise against them for climbing uses.

Rafting yes. Canyoneering maybe, even though the common wisdom is dry "stuff" sacks, such as the "Summit to Sea" brand inside well draining backpacks.

My 2 cents.

RF

Richard Fernandez wrote:Can be a pain, they are somewhat fragile in nature. Especially when you stuff them with metal, as in climbing gear. You will find small holes in them quickly. I've had many for canyoneering and would advise against them for climbing uses. Rafting yes. Canyoneering maybe, even though the common wisdom is dry "stuff" sacks, such as the "Summit to Sea" brand inside well draining backpacks. My 2 cents. RF

I really like Bill Bags from NRS. They are fragile though, and you'll end up with pin holes in them quickly. Its just the nature of it. DOn't sit on them.

Check out this one

Evan1984 wrote: I really like Bill Bags from NRS. They are fragile though, and you'll end up with pin holes in them quickly. Its just the nature of it. DOn't sit on them.

Does anyone know if the SealLine Urban Backpack holds up better than these others? The material seems like its a bit different.

I use a 60L version of one of these sealline bags as a pack-liner. Just drop it in, you've got a simple compartment for all your stuff. Depending on the size of your pack, you can put wet stuff under it at the bottom (like a shelter or tent). For carrying your rack, just make sure its surrounded by some clothing so it doesn't tear the liner to shreds. Only weighs half a pound, as much as a pack cover, and looks and functions much better. Also takes away the need for a sleeping bag compression sack. Many of the trekkers down under use and prefer this system to our pack cover system.

I would imagine the SealLine urban backpack would be fairly burly, being made of 600D polyester.

Also, Arc'Teryx makes some inexpensive dry-bag style backpacks such as the Arrakis. What a smokin' deal!