Sawyer Products SP128 Water Filter - 0.5L

Got it delivered much before the expected delivery date. Product is fantastic. The seller sent it well packaged. I am using the filter. The flow was not there at the first time I tried sucking water through it. Just gave a min for the fibers inside to soak, and then it was a normal flow. Felt like drinking water from a wide straw. Its definitely effective. I am going to test the filter to purify muddy dirty water soon and will update on how well the filter purified it.Few people here complained that it wont filter out the viruses and its only 0.1 micron filter. well, Viruses are pretty rare in the water that you drink everyday. roadside hotels, certain places where the source of water is suspicious, this filter is more than sufficient to guarantee that u will be safe drinking that water. Unless u r drinking water from roadside drainage or some extremely dirty stagnant water, u don't really need a filter which can remove the viruses.If u are still concerned about the viruses, u can order water purifying pills available on amazon. the seller is Hind-Pharma and their tablets are absolutely amazing. Use the sawyer mini, remove all the bacteria and other nasty stuff from the water, drop a tablet in the water, wait for a while for it to work and drink the water.Its an absolute must for everyday use, during travelling, etc. One might feel awkward using it in India as people will definitely stare at u when u are using it, but hey, I don't care. My health is imp to me and clean water is must. I don't wanna be sick just because I drank some supposedly clean water. Its in my bugout backpack now. Ill order another to carry with me for everyday use

Awesome product. Back wash required after very long use. Though water bags appears crumpled and would get torn after one two months regular use, still product itself is very rugged and appears will stay for 1 million gallons=3*10,00,000 litres which is vfm!!!Price of 04 set is very low abroad (amazon.com) however compared to that being sold in amazon.In. If the same price is made available without the exuberant delivery charges (as auth. Distributor exists in India so no need to call in to stocks from US after paying delivery) if the same at the same price can somehow be made available.Very good for sales personal and people always on the move, client visit etc,as water at different places, road side, hawkers or readily available on the go is questionable.So even if you are not immediately going on a mountain hike, still the product is useful in the city!!

See all the reviews and videos online and you'll know that this is the best filter for all kinds of bugs in your water (except viruses). Sawyer does make a 0.02 micron filter for them pesky viruses too - this one is.0.1 micron, for everything except viruses.Anyway, this is the lightest, smallest effective filter and its flow was fast after my third squeeze through it (the first couple of squeezes are slightly slower until the fibers get fully saturated with water). And after some more use, the flow gets even faster. Yes, it is much slower in a gravity set-up, but use the Sawyer Squeeze for that (instead of the Mini). Flow looks to be about the same rate as when you pee really hard ;) Can fill up a liter in about a minute, maybe 1.5 minute. And you can fit this directly onto most popular one liter bottles, so if you don't like the water pouch, then you can use a regular bottle. Backwashable filter is absolutely essential in my book (for cleaning, longevity, etc.). Also, this is an absolute 0.1 filter (meaning that no hole is larger than 0.1 micron). I don't trust the electrostatic or other charge-based filters which claim to filter everything because their assumption is that all bugs carry a positive charge (and the bugs they test DO carry positive charge)... plus the charge polarity filters I'm not sure will catch everything in real life scenarios. And other filter types require replacing frequently otherwise filtration suffers (and bacteria may actually grow inside the filter!). Also, I saw a video where numerous Sawyer filters failed in some village (I forget the location). That "analysis" has since been shown to be faulty by real, controlled tests - there is also a paper published by Tufts University that proves that the Sawyer filters do what they say. Also, make sure you don't expose this (or ANY) water filter to freezing weather - because of the way water expands/contracts, freezing will damage filters (even if the filters look okay on the outside). In freezing weather, they say to carry your water filters in your pocket and at night put in your sleeping bag - even easier to do with this mini size. Also, on flights can't check it in; take in your carry-on bag.Update: To all the people looking for fail safe option, I've been using the Sawyer Mini first, and then a second pass with this SteriPen during travel in India. Drank about four liters of Indian tap and well-water every day for total of ten months using my system and have not gotten sick... if that's not proof, then I don't know what is!

Good quality piece, not a cheap copy thankfully. Used it on treks, it's a compact and extremely useful thing to have.

Excellent unit. I love the fold able bottle that comes with it, removing the need for me to purchase another such item for my travel kit. The filter itself is very useful and work very well. The included straw and the syringe are both robust and well designed. I have no complaints and the Sawyer kit is a well recommended item in every survival kit. I am happy to have this with me.

From the health point of view, it's impossible for a commoner like me to say whether it's bad for your health. But it's a great product.Only drawback is that the water packet doesn't have provision to hang, hence you will have to hold it for a while if you are trying to fill up your bottle.One advice: Dry the packet from outside with a cloth before you fill a bottle. You don't want dirty water dripping in your bottle with the filtered water!

Highly effective in its task. Used it on a multiday trek to the Himalayas and used it for filtering water from the rivers for cooking and drinking purposes. Thankfully not a single water related health problem. Would highly recommend for carrying along outdoors.