Waterdrop Gravity Water Filter Straw, Camping Water Filtration System, Water Purifier Survival for Travel, Backpacking and Emergency Preparedness, 1.5 gal Bag, 5 Stage Filtration, Pack of 1

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 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.

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!

I bought this for a camping trip to replace another more expensive gravity system that I had used for years. The short version is; I was able to successfully use it, and I didn't get sick from it (which is always a plus) but some things could definitelybe improved. Read on if you want the full details. Pros- It's a decent price, and the one I got came with 2 filter straws and drinking bags as well. It definitely works, it filters pretty quickly (honestly a little too quick it seems, but we will get there in a second), and it isn't difficult to set up and use. The reverse flushing system is easy to use since the mouth piece can be removed and a bottle (or included bag) can be screwed into it. - If you are short on cash and just need something to filter some decently clean running water, then you could certainly do a lot worse. Cons- Unlike the systems I'm used to (which, granted, cost at least twice this) there is no degree of filtering done in the bag at all, everything just feeds down into the hose that connects to what essentially boils down to a lifestraw. So there is only that one stage of filtration, and that stage doesn't filter out everything, so I would still boil it unless you are drinking from a fairly pristine spring or running creek. Since there is only that one stage, it is really important that no leafs or debris is picked up when filling the bag, or the system will get clogged quickly. This could easily be remedied with a even just a screen in the bottom of the bag, but would still slow the process. I was only there for a night using this, and it was already noticeably slowing down and needed to be back-washed (which is necessary anyway with any of these systems, but really important here). The mechanism to stop and start the flow is cheaply made plastic and kind of difficult to use one handed. Not sure how long it would hold up either, since there was some noticeable whitening on the hinge part after one night's very occasional use. My biggest gripe is lack of compatibility with any other filters, and them not selling an upgrade that fits this system. (As far as I can tell, anyway) All in all, it's serviceable in a pinch, and it's worth the price. I wouldn't rely on this as your primary water filter in a true bug out situation though. Durability is definitely in question here, but I'll try to update after more uses. It's decent, but it could be a lot better. If you have the money then I would go ahead and just invest in a Sawyer, or higher dollar one. If you are strapped for cash, and just need something to work for the time being or an emergency, then it should work well enough for you, as long as you are careful about water sources and keeping it clean. Hope this helps someone out there 👌

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.

Very flexible and adaptable system, will work in very many different settings or activities. The Tygon tubing is good quality and the fit of all the parts is good. Because of its modular nature, this filtration system is quite compact and lightweight. The price is quite affordable. Per its usual, Amazon will deliver to your doorstep at lightning speed, so overall a very satisfactory purchase.

Husband and sons recently went on a 2 day hiking and camping trip. They took this waterdrop system and were so pleased. They mentioned it was the perfect size to fill and distribute water to individual bottles. Great tasting water, very easy to fill and use. Plus, cleaning was easy. Overall built strong and durable, great to take for that hiking trip!

My husband & I do a lot of camping or hiking or just being outside & this works great! I had a backpack one but sucking the water out of it was a task lol. This one flows easily & it doesn't leak when turned to off.