Is it a 10 litre or 2.2 Gallon emergency hydration pouch, perhaps its Compression Dry bag to keep your sleeping bag and clothing dry in wet weather or perhaps its a Solar Shower, well its all three, the Ortlieb Water Sack 10 Litre (Black).



This was just what I was looking for. A lightweight and useful bit of kit with multiple uses. Oh and it can be used in conjunction with a Katadyn Siphon filter for a large capacity gravity feed water filter and with the wide roll top closure it is easy to clean the inside.

http://www.ortliebusa.com/CartGenie/prod-68.htm

http://www.ortlieb.com/_pdf_en/watersack.pdf

Looks like a useful bit of gear. I know Ortlieb bike panniers have a very good reputation - sturdy and waterproof.

Wow, that's a cool find!

Nice find, love multi-taskers, thanks for sharing!

I wish I'd known about the Ortlieb Water Sack before I purchased a couple of MSR Dromedary Bags. I quite like the Dromedary Bags, but a larger fill port separate from the outlet would have been nice.

Can you hang the Ortlieb so that the roll top remains open while filling the sack? Otherwise I think it would be hard to keep upright while filling.

The snap at the top can be clipped together and allows you to use a grab handle when collecting water such as in the video for the Katadyn Base Camp gravity filter. In fact the bag supplied looks identical.

http://www.youtube.com/watch?v=w_0aPpTKD24&p

http://www.youtube.com/watch?v=O_7N_xaURvo

The Katadyn base camp uses the cheaper filter cartridge from the Katadyn Hiker model. The Katadyn Siphon filter is also compatible with the Ortlieb Water Sack.

http://www.sailgb.com/p/Katadyn-Siphon/

I may get one of these later. Using this combination allows up to 20,000 litres of water to be filtered using a ceramic cartridge rather than to 1000 litres using the Hiker cartridge.

The bag also makes for a neat compression sack for storage of some cold weather MoD issue softie bivi jacket and trousers.

You may find the MSR dromedary bags slightly more robust for carrying in a back pack though and they can apparently be used with boiling water.

My main use for the Ortlieb bag was really as a totally waterproof compression sack and solar shower combo. Water carry and gravity feed filter were really secondary requirements. Carrying 22lb of water whilst hiking in Scotland doesn't really make for great deal of sense.

Seychelle's #35 US "in-line-filter would probably work with the Ortliebe. (Seychelle's "Pure Water Bag" and Katadyn's "Base Camp" gravity filter bags are similiar products, but don't claim the Ortliebe's multi-use.

http://store.seychelle.com/Pure_Water_Bag-Pure_Water_Bag_Advanced.html

A simple pre-filter for the Ortliebe is probably a good addition.

If you needed something even larger, a MSR Packshower 30 liter Dry Bag might be something you could use.