Gravity Water Filter Straw, Camping Water Filter, 0.1 Micron | Survival Water Purifier for Hiking, Backpacking & Emergency Preparedness, Multi-Stage Filter with 1.5 Gallon Bag, 2 Pack

This filter is awesome, used it on a three day backpacking trip recently. No issues whatsoever. For everyone’s information however, the reservoir bag does not seal fully when filled. The top, although it folds nicely into a handle for carrying - which is amazing and super convenient - it does not prevent water from coming out the top if you, let’s say, put the bag down on the ground to get the straps adjusted or something. So the reservoir is not for carrying water for long distances, unless you’re prepared to always keep it upright and never put it down until you can hang it. Still super doable if you’re going short distances, it doesn’t spill when you’re holding it by the handle, just if you put it down on the ground while filled and it falls over. Other than that, this kit is awesome. Gives you the option of reversing the steps, instead of filtering the water into the small plastic water bottle pouch, you fill the plastic bag with the unfiltered water, screw the filter straw onto the pouch, and drink it directly out of the filter (basically a life straw). I think the bag might be half a liter that it comes with, so if you want a bigger pouch then you’ll have to order one. This is the way I’ve seen most through hikers using it, usually with the sawyer filter setup. But this filter gives you both options, filter the clean water from the reservoir into the plastic flexi pouch or any other bottles you want, or collect the unfiltered water into the flexi pouch, attach the filter directly to the pouch, and drink through the filter. Super lightweight, condenses into a really small volume, durable (I carried water in the reservoir for more than 5 miles, by hand, leaning it against a tree when I had to put it down, and the material held up). We used it for three days and that was more than two weeks ago, long enough for any water born sicknesses to have shown if it didn’t work. Great purchase.

This arrived quickly and appears to be very compact and efficient, though I'm saving it for emergencies, since my well water is good and deep. This is for true emergencies and I believe it should work well, based on the design and components. Lightweight and would work well in backpacking scenarios. A great little product.

This is a great water filtration system for camping. For those who are used to pumping to get clean water, this will be a pleasant revelation. For those who have used other gravity feed systems this will be an inexpensive and surprisingly quick alternative. I recently used this on a 4 day backpacking trip and love it. Here are a few highlights: 1. The feed back is lightweight, flexible, and fills to 1.5 gallons in one scoop of lake water. (BTW, don't fill it all the way to 1.5 gallons--it'll work better at about 1.25 gallons.) My friend is going to purchase the bag simply because it's so much easier and more efficient than the bag his (very expensive) system came with. 2. The filter has a bigger barrel than my Sawyer, and thus flows at about twice the speed. 3. The filter can be back flushed with the provided collapsible bottle--no need to bring along a syringe for back flushing. 4. The hanging system (also provided) is high quality and works great. Here's what I don't know: 1. My friend and I suffered no symptoms of waterborne illness, but the flow rate was so strong when we first started using the system that I was worried that it might not be filtering. What can I say? I guess I'm suspicious because it worked so well! The flow rate did decrease on the 4th day (after filtering about 11 gallons of water). But even the reduced rate was similar to my Sawyer filter. 2. The instructions didn't say anything about back flushing. I went ahead and back flushed when I got home, since every other filter I've used makes some provision for cleaning/flushing. I don't think it damaged it, but don't know for sure. I'd love someone from the company to respond to that question.

I would give it 5 stars if the clip that stops the water flow actually worked. Everything about this sytem works perfectly, is lightweight and super easy to use. However, the clip that's supposed to stop the water flow does not work very well. I was not strong enough to clip it to the last notch and on the next-to-last notch it did not stop flowing. I had to put the hose up above the bag to get it to stop. The water bags and filtration straw to actually take on a hike were awesome and served us well on a 10 mile hike.

This water filtration system was absolutely perfect for my recent backpacking trip. A group of us hiked over 6 miles and camped near the river and was able to fill this water filtration up and use it amongst 6 to 12 individuals easily. It worked seamlessly and was truly beneficial for life, sustaining good filtered water. This item was very lightweight and was able to pack neatly in a backpack and did its job.

Came home from Uzbekistan with the worst case of what my grandma used to call the “gogo-amago” ever. Figured it either came from carelessly rinsing iur toothbrush in tap water, or eating a fresh fruit washed in tap water. Made an advance plan for our next trip to a third world country. No salads. No fruit unless we washed it ourselves. No smoothies unless they used bottled water. Don’t use room water provided unless we saw them filter it ourselves. Have a plan in place to provide so we won’t dehydrate and for tooth brush. This little gizmo is AMAZING. It is lightweight, super easy to pack, easy to use once you get the hang of it, cheap to use, and saves tons of plastic. My only fear is, the straw part is very sturdy, and so far the bag part is, too, but it seems much more likely to wear out, crack, or get punctured (even though it’s a thick plastic) than the straw. I wish they’d include and extra bag or two, as well as instructions to clean and store straw and bag. Well worth what seems to be an initial “investment”. Other travelers were jealous, and asked for details. Will be packing it for our next trip, to rural Morocco. Wouldn’t dream of traveling without it now. Has earned a spot in our minimal packing. Os: bought extra straws, but it seems like these things last forever. Hope we’ll get to travel enough to use the extras!

We used this bag and filter every day for a week of wilderness camping. I bought a second after being so pleased with this one. Flow rate is superb compared to competitor products. We had one or two days where an algae bloom heavily covered the surface water of the lake. We filtered water all week without problem. Backflushed easily on day 5 with clean water and was amazed to see the amount of algae and dirt that came from the back wash. Restored back to original flow rate. The bag is durable but I could see it getting damaged if not protected or stored properly. The water tasted good for the price point. Compact space saving design.

Loved this water bag!! Took it to Havasupai in 112 degree heat...yes, they have a water source but i filter for my own comfort - we filled the water bag each morning and each evening - used the smaller carrys for short treks - this was easy to set up, easy to fill and the straws filtered quickly.

Arrived as expected and in prestine state. Haven't tested the filter yet though

Very good product

This is my first gravity water filter system and I have no regrets. I was worried because it was much cheaper that it wouldnt be of good quality but I was surprise how well it works. It looks complicated to use the first time you use it but its actually easy and can be used different ways depending what you like. Light weight, small, can be used different ways and you dont need to bring all the parts with you when you go out, so that makes it even more light weight. The straw can be use just like a regular filter straw or by filling the 20oz water bags that comes with it and screw it directly to the straw to filter water or again a larger bag of 5.5 litres, that looks like a dry bag, that also comes with it, can be hung on anything and that gravity feeds tru the straw than into your container. The filtering is pretty quick. Its nice thats its water gravity so no pumping required like some models. Great tasting, no after taste. Love this product. light weight, easy to use, easy to clean and versatile.

I only received the big blue bag and hose no filter and small bottle is delivered, very poor delivery...

Muy buen producto, todos deberíamos tener este equipo como emergencia y para el campo