Released in late 2014, the Mission is one of the latest in the LifeStraw product line. You may have seen our other reviews of the LifeStraw Personal (their best selling filter and very common amongst the survival community) and the LifeStraw Go (a water bottle filter system).

The LifeStraw Mission is a gravity powered water purifier that uses an advanced ultrafiltration membrane with a 0.02 micron pore size, removing virtually all virus, bacteria and protozoa (99.99%).


Technical Specifications

Here are the technical specifications on LifeStraw’s website and we’ll talk about each of the features indepth in our review below.
  • Purifies 18,000 liters / 4,755 gallons of water to 0.02 microns (20 nm)
  • Removes virtually all bacteria (99.9999%), protozoa (99.99%), and viruses (99.999%) that can contaminate water
  • Exceeds US Environmental Protection Agency drinking water standards
  • Compact roll bag reservoir available in 5 liter (1.3 gallon) and 12 liter (3.1 gallon) sizes
  • Reduces turbidity (muddiness)
  • Flow-rate of 9-12 liters (2.4-3.2 gallons) per hour
  • Lightweight: 0.43 kg. (0.96 lbs)
  • Ultrafiltration hollow fiber membrane
  • Requires no electrical power, batteries or replacement parts
  • Easy-to-clean pre-filter and purification cartridge
  • All raw materials are BPA free and US FDA compliant
  • No aftertaste: LifeStraw doesn’t use iodine or iodinated resin chemicals

What’s In The Packet…

Included with the LifeStraw Mission is the water bag, the filter, tube, carry sack, strap and four spare mesh pre-filters.


LifeStraw Mission Parts & Accessories

Nylon Carry Bag (includes usage instructions printed on the inside on a piece of cloth)

Nylon Carry Bag (includes usage instructions printed on the inside on a piece of synthetic nylon – see below image)

Instructions printed on a piece of nylon stitched to the inside of the carry sack

Instructions printed on a piece of nylon stitched to the inside of the carry sack

Fully adjustable strap

Fully adjustable strap


4 Spare Mesh Pre-Filters

Our Review

At the top of the water bag is a strap that clips together and you can hang this from a tree branch so that the water can be purified.
There is also an additional fully adjustable shoulder strap that attaches to the ‘D’ loops at the top of the bag which allows you to either clip it to your pack or shoulder carry it. The bag itself (which is exceptionally lightweight weighing in at less than half a kilo) is made from 200-denier nylon with thermoplastic urethane lining which is exceptionally tough and durable – a great choice of material. On the front of the bag there are clearly printed, easy-to-understand instructions on how to use the filter as well as cleaning and on the other side there are litre markings.
At the bottom of the bag is where you connect the tube to the filter component.

Tube socket


Tube connected to water bag

The bag easily rolls up for convenient, compact storage inside the included stuff sack. Included with the filter are 4 extra pre-filter meshes.
The one we have is the 5 Litre version which is unarguably a considerable capacity. There is also a 12 Litre version available if you’re looking at purifying a larger quantity of water.
The LifeStraw Mission can be filled up from a lake, river creek, stream or other suitable water source by pouring water in from a bag, bucket, bottle, canteen cup or other container or simply scooping water out with the bag itself.
In our testing, we have found the flow rate of 9-12 litres per hour quite reasonable. In terms of the filtration system, like all other LifeStraw products, it utilises hollow fiber membrane technology which is highly effective at removing virtually all bacteria, protozoa and viruses. This is much better than other filtration systems that use chemicals such as iodine or iodinated resin chemicals which can be detrimental to your health as well as leaving behind an unpleasant aftertaste. An additional pro of this filter is that it does not require electrical power, batteries or replacement parts so you don’t have to worry about carrying around extra parts in your bug out bag. It is also requires very low maintenance and is remarkably easy to clean. For cleaning instructions see below image.

Cleaning Instructions Printed on Roll Bag

The parts are also BPA free and USFDA approved which means that you can have peace of mind knowing that the water you’re drinking does not contain harmful chemicals that have leached in.

Dirty, Contaminated Water!

As you can see in the photo below, the water that came out after we filtered the contaminated water was clean with zero turbidity, so this product definitely works as advertised. The water also tasted exceptional, with a hint of sweetness but no trace of dirt or other nasties. Needless to say, I am very impressed!
The filter at work!

The filter at work!


Refreshingly, sweet potable water!

The Mission’s lightweightness and portability plus the amount of water it can purify/carry makes it suitable for a car survival kit or for a remote expedition such as a mission trip etc. It is also perfectly suited to camping trips, group hikes and any extended trip into the boonies for guaranteed clean, purified drinking water!
The best part about all LifeStraws products is that a portion of the proceeds from sales goes to providing clean drinking water to school children in impoverished Africa. Essentially when you buy one, you’re giving one! Get a LifeStraw and make a difference in someone else’s life! For more information on the impact generous people are making on these children’s lives, visit
You can purchase the Mission at
Thanks for stopping by and taking the time to read our review of the LifeStraw Mission!
Until next time, “Be Prepared, Stay Alive!”