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💦 Stay ahead of the pack with gravity-fed purity on the go!
The Waterdrop Gravity Water Filter Straw is a portable, non-electric purifier featuring a 0.1-micron hollow fiber membrane that removes harmful contaminants and improves taste. Paired with a 1.5-gallon gravity-fed water bag, it delivers up to 700 ml/min flow rate and supports up to 1,400 gallons of safe drinking water. Its backwash function ensures easy maintenance and long-term use, making it an essential survival and outdoor hydration tool.

















| ASIN | B086QNLBB4 |
| Best Sellers Rank | #18,922 in Sporting Goods ( See Top 100 in Sporting Goods ) #28 in Camping & Hiking Water Filters |
| Brand Name | Waterdrop |
| Capacity | 1.5 Gallons |
| Container Type | Tasche |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,810) |
| Included Components | 1 x Wasserfilter-Strohhalm, 1 x 1,5 Liter Wasserbeutel, 1 x 473 ml Wasserbeutel |
| Installation Type | Freestanding |
| Item Dimensions L x W x H | 17.2L x 8.6W x 27.7H centimeters |
| Item Weight | 0.29 Pounds |
| Manufacturer | Waterdrop |
| Material Type | Activated Carbon |
| Maximum Flow Rate | 700 Milliliters Per Minute |
| Model Name | WD-FSBUL |
| Model Number | WD-FSBUL-1 |
| Other Special Features of the Product | Chlorine Reduction |
| Power Source | Non Electric |
| Purification Method | Hollow Fiber Membrane |
| Supported Water TDS Level Maximum (PPM) | 1000 |
| UPC | 840814172988 |
| Unit Count | 1.0 Count |
B**E
Excellent. Been using it camping for months now. Not been sick, despite deer where I camp
M**S
Arrived as expected and in prestine state. Haven't tested the filter yet though
R**E
5/5 Stars – Very impressed with this gravity water filter! Took this portable gravity-fed water filter hiking and it performed great. Just hang it up, let gravity do the work, and in just a few minutes you have clean, great-tasting water from streams or lakes – no pumping required. It filtered murky water without clogging, was super lightweight and easy to pack, and the flow rate was excellent. My whole group stayed hydrated all day without any stomach issues. Perfect for backpacking, camping, or emergency use. If you hike a lot, this is a game-changer. Highly recommend
J**Y
I only received the big blue bag and hose no filter and small bottle is delivered, very poor delivery...
D**L
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.
Trustpilot
1 month ago
2 months ago