Does anyone have a source for a large and wide cuben dry bag or dry sack?

Looking for 25L or 30L, around 1 oz.

At least 18 in. x 8 in. wide at the bottom would be ideal or just 22 in. straight across would be fine.

Even a drawstring closure may work.

Trying to figure out a way to enclose the sleeping bag at the bottom of a GG Mariposa Plus and have the bag fill up the bottom and come up the sides a bit in order to place the Bearikade weekender on top and kind of "inside" the bag. This kind of works with a turkey bag (0.5 oz.) or compactor bag (2 oz.,) but I'd like to better waterproof the sleeping bag and get the bear can placed in this "padding" to try to protect the pack from having the bear can rub holes in it.

Look here

Thanks Michael, but sadly, they are out of stock.

Mountain Laurel Designs makes some.


$18 Small 7 X 11 14gms / .5oz 2L Emergency Kit/GPS/Phone/ Etc.

$20 Medium 8.5 X 15 18gms / .7oz 4L Very small down bags and clothing

$24 Large 13 X 24 34gms / 1.2oz 8L Down and most light synthetic sleep bags

$34 XLarge 17 X 33 52gms / 1.7oz 16L Can be used as a pack liner.



So does zpacks

http://zpacks.com/accessories/stuff_sacks.shtml

Edited by wandering_bob on 08/05/2010 10:44:50 MDT.

Thanks Bob, I appreciate the info and links.

I checked all the usual suspects; MLD, ZPacks, Mountainfitter, Granite Gear, and can't find anything big enough.

All the largest sizes basically turn into a long cylinder, about 10-11 in. in diameter, when filled with the sleeping bag (WM Aspen.)

I'm after something wider that will squish down and spread out in the bottom of the pack.

I am sure one of those companies would be able to make a custom one for you. Send an email.

Why don't you just lay the cylinder sideways to fill the bottom of the pack?

Dan, I tried that, but the drysack I got, the Granite Gear cuben fiber Uberlight large size, is 18L, 6 x 8.75 x 22.5".

When filled, this produces a solid cylinder, too long to fit sideways. I can just stuff it tighter and it could fit, but that doesn't solve the issue of trying to protect the bear can. That method actually causes the bear can to really push out at the front, leaving the pack vulnerable with the first rock it is leaned against.

So, I do plan to lay it sideways, if needed, it just needs to have enough material to allow for the whole thing to really flatten out.

I had planned to wrap the can with my ProLite Plus, and that worked great. But I just got the Neoair, so that method won't work.

Angelo, while MLD does state that custom sizing is not available, I'll get with the others to see if they might do it, good idea.

It's not cuben, but the Granite Gear Airvent compression sacks reduce my O degree down bag to a rectangular shape that is pretty small. You may want to check them out . They have very thin cinch cords, but if you lay on the whole bag or place it under your knees when packing it is then easy to cinch down once the air has exited the airvent/eVent bottom.

Edited by Meander on 08/05/2010 20:58:56 MDT.

I also wanted the mountain outfitter one for my pack liner, but I found this as another possible option:
http://www.seatosummit.com/products/display/5

About an ounce more than the cuben fiber one, but also bigger.

Edited by lindahlb on 08/06/2010 12:39:13 MDT.

John, I'll check those out.

Brian, I looked at those, as well, and actually ordered one from REI to have a look. Unfortunately, they are backordered, so I'll have to wait until they come in.

Thanks for the ideas.

Check these out!

They have a 12.5" x 8" full bottom and are 16", 26" and 38" before rolling. They work out to around 20L, 40L and 60L.




-------------
Lawson should have added here that he is selling these - a vested interest.
Cheers
Roger Caffin

Edited by rcaffin on 08/10/2010 04:44:03 MDT.

I want that! When will they be available for sale?

Jennifer is looking for a bag to fit a certain space, and dry bags in general don't exactly play well with high lofting down bags because after you get your triple roll on the top the rest of the bag is a pillow filled with air and down and assumes the shape it was sewn in. That's why I like an airvent/event compressor to get the down bag down to a reduced size. I suppose if you sat on the regular drybag or otherwise got the air out you might be able to do similar things but you are fighting the loft and if your seal isn't 100% pretty soon you are back to sewn shape. If this isn't the case -and it sure is with all the sil-nylon drybags I have, enlighten me ( kind of a double edged invite at BPL}.

Hey John,

You make a really good point, but compressing a sleeping bag in a vent-less drybag can be done relatively easy after you figure out how to trick the physics involved. The trick is to compress the sleeping bag before you roll down the top while using the top as a purge valve. Haha thats where it can get very interesting. I fold the roll-top one time and then sit on the dry bag with all my weight compressing the sleeping bag inside. In this step your basically purging out all the air by making your bag burp/belch. Once the sleeping bag is fully compressed its time to roll the top down the rest of the way for a really nice water-tight seal.

Gotcha. And if it holds you are sealed and if not a leaker?Does that follow ? Over what time frame is it a nogo?Let's say backpacking vs. rafting? Dig what you are doing. John

It actually creates some suction since the bag inside wants to expand which helps to keep the top really sealed. This is no different then a eVent or purge valve type drybag. Keep in mind most companies rate their drybags as splash proof which is a joke all in itself.