Bring it along as your main supply of water, but be sure there's actualy water to filter wherever you're going. Otherwise, use it as a backup to water you bring along. It's very light and easy to carry and works very, very well.
- Light weight and replaces carrying heavy water.
- Easy to use.
- If there's no water source you're in trouble, so be sure of water where you are going if at all possible.
We used the Life Saver 400 bottle on a 3-hour hike in 30 degree weather and filtered all of our drinking water from small streams and clear pools. Absolutely no trouble whatsoever and it supplied water for 2 adults, our eleven year old daughter and 13 year old son.
We dipped numerous times to fill it and pumped the mechanism many times. It worked flawlessly. A nice feature is that it performs somewhat like a water fountain, or spring, that is, water flows because it is pressurized, so there's no requirement to guzzle or glug water as one would from a standard bottle.
Additionally, we've used the jerry can on camping trips and it too works perfectly and as advertised. The jerry can supplies a steady stream of filtered water, is easy to carry due to the the generous, smooth handle and the interior rinses very, very clean should you decide to flush it of residue from smelly water sources. Well worth the money because under normal circumstances sourcing water form clear streams and pools rahter than turbid water I expect it to last for a number of years before the filter has to be changed.
So for recreational hikes and camping 4000 litres will go a long way. Hard core adventurers may want to carry an extra filter if murky water is to be sourced for survival.