









💦 Drink Fearlessly, Adventure Limitlessly!
The Waterdrop Gravity Water Filter Straw Pack combines a premium 0.1 micron ultrafiltration membrane with a 1.5-gallon gravity-fed water bag, delivering up to 700 ml/min of clean, great-tasting water. Designed for outdoor enthusiasts and emergency preparedness, it filters up to 1,400 gallons and features a backwash function to extend lifespan, ensuring reliable hydration wherever you go.

















| ASIN | B086QNLBB4 |
| Best Sellers Rank | #1,650 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #8 in Camping & Hiking Water Filters |
| Brand | Waterdrop |
| Date First Available | April 2, 2020 |
| Installation Type | Freestanding |
| Item Weight | 4.6 ounces |
| Item model number | WD-FSBUL-1 |
| Manufacturer | Waterdrop |
| Maximum Flow Rate | 700 Milliliters Per Minute |
| Model Name | WD-FSBUL |
| Package Information | Bag |
| Power Source | Non Electric |
| Product Dimensions | 6.77 x 3.39 x 10.91 inches |
| Special Feature | Gravity Water Filter Straw, Water Purifier Survival |
| Supported Water TDS Level Maximum (PPM) | 300 |
| UPC | 840814172988 |
H**E
Essential and excellent accessory
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.
J**S
Impressive and convenient water filtration
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.
S**G
Travel WIN!!!!
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!
E**D
Great filter but may have issues in cloudy/muddy water
Great filter purchased for extended wilderness camping trip that functioned as needed. Only reason for not getting 5 stars was how quickly the filter on it seemed to silt up and slow down. The creek where we filled up with was a clear high mountain stream and we were careful not to muddy the water as we filled the bag so it’s not like there was a heavy amount of silt needing to be filtered out. I’m sure if we were using it in a muddier faster moving river like the Colorado or something the filter would have been even harder to use. In the long run, my family of four got all our drinking water for the majority of our trip through this filter and no one got sick which is the main thing. The fact that it got slow and harder to use I was a slight in convenience but, in the long run and acceptable issue given its functionality.
D**S
An efficient, lightweight, and fast water filtration system.
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.
A**L
Great buy! Easy to drink & does not leak!!
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.
J**N
Absolutely Exceeded Expectations!
Absolutely Exceeded Expectations! I took this on a 2-night hike in the woods with a Trail Life troop — 8 adults and 11 kids — and this water filter performed beyond what I imagined. It provided clean, fresh water for everyone, and we even had extra water left over. It was reliable, easy to use, and incredibly effective. No complaints at all — we all loved it. Highly recommend for any group camping or hiking trip! Will be buying a second one
P**D
Waterdrop Gravity Water filter
Great product works very well
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
L**B
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.
J**Y
I only received the big blue bag and hose no filter and small bottle is delivered, very poor delivery...
H**R
Muy buen producto, todos deberíamos tener este equipo como emergencia y para el campo
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