Membrane SolutionsStraw Water Filter S1, NSF/ANSI 42&372&401 certificated, Survival Filtration Portable Gear, Emergency Preparedness, Supply for Drinking Hiking Camping Team Family Outing

I originally bought these water filter straws for my emergency kit, but I had the chance to try them during a recent hiking trip and I loved them. We tested them with lake water and it worked perfectly—the water came out clean with no weird taste. I was really impressed with how well they work and how easy they are to carry. Now I feel even more confident keeping them as a key part of my emergency supplies.

These filters are a great choice for anyone looking for a simple, reliable solution for clean drinking water. They hold up well, even after repeated use, and the price point is definitely better compared to other similar filter straws on the market. I’ve compared them side-by-side with more expensive brands, and these perform just as well, if not better in some cases.The 5-stage filtration system is a nice feature, removing 99.99999% of harmful substances while still maintaining the water’s mineral balance. The smaller 0.1-micron pore size ensures high filtration accuracy while keeping the flow rate fast enough for practical use. The compact size makes it easy to carry in your pocket, bag, or backpack, so it’s perfect for camping, hiking, or emergency preparedness.Overall, this is a great filter for the price, offering durability, efficiency, and convenience. Definitely recommend it if you’re looking for a portable and affordable water filter.

Has threads for a standard water bottle so you can set it up as a gravity system, too. Probably the cheapest and still effective water filter out there. Awesome.

These are nice personal filters. I just bought four more. The last one of the last batch had an issue, though, it wouldn't pass air. If the chamber between the entrance and exit got any air in it whatsoever then it became vapor locked and impossible to use. It meant taking it apart and priming it before every use, sometimes twice as it wasn't a very easy maneuver. I don't know what happened with that one. Every other filter has behaved normally and last quite a long while. I have no idea why the osmotic membranes refused air passage, but that one also back flushed very easily, too. QC may be an issue if one in four is bad. We'll see.[Edit: The new ones seems very slightly redesigned, not exactly the same size and have a few minor improvements. So far, working as intended.]

Definitely a must out in the wilderness if you want quality drinking water!! Compact and easy to conceal!!

Have not used yet, but bought just in case when we are out need them. Easy to carry

Great price! These are a must for anyone interested in being prepared!

Easy to use. Small in size but good water clarity