--- product_id: 337013321 title: "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 2" brand: "waterdrop" price: "€ 96.31" currency: EUR in_stock: true reviews_count: 13 category: "Waterdrop" url: https://www.desertcart.sk/products/337013321-waterdrop-gravity-water-filter-straw-camping-water-filtration-system-water store_origin: SK region: Slovakia --- # 700 ml/min max flow rate 0.1μm ultrafiltration membrane 1.5 gal gravity-fed water bag 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 2 **Brand:** waterdrop **Price:** € 96.31 **Availability:** ✅ In Stock ## Summary > 💧 Stay hydrated, stay ahead — filter your adventure with Waterdrop! ## Quick Answers - **What is this?** 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 2 by waterdrop - **How much does it cost?** € 96.31 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/337013321-waterdrop-gravity-water-filter-straw-camping-water-filtration-system-water) ## Best For - waterdrop enthusiasts ## Why This Product - Trusted waterdrop brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rapid Flow Rate:** Quench thirst fast with up to 700 ml/min water delivery - • **Modular & Versatile:** Fits water bags or bottles—clean water anytime, anywhere - • **Backwash Recyclable Straw:** Flush & reuse for eco-friendly, long-lasting performance - • **Massive 1.5 Gallon Capacity:** Stay fueled all day with 11 bottles worth of filtered water - • **5-Stage Ultra-Clean Filtration:** Eliminates chlorine, sediment & odors for pure hydration ## Overview The Waterdrop Gravity Water Filter Straw Pack of 2 features a premium 0.1 micron ultrafiltration membrane and a large 1.5-gallon gravity-fed water bag, delivering up to 700 ml/min of clean, safe drinking water. Designed for outdoor enthusiasts and emergency preparedness, its recyclable backwash function extends filter life up to 1,400 gallons, ensuring reliable hydration wherever you go. ## Description Product description Model : WD-FSBUL Capacity :The Waterdrop gravity water filter straw system can provide 1,400 gallons/one straw of safe drinking water. The maximum capacity can be reached 100,000 gallons by backwashing to purifier the straw. The Waterdrop gravity water bag can hold up to 1.5 Gallons of water at a time. 5-Stage Filtration : Made from selected filtration materials, the 0.1 um fiber membrane of the gravity water filter straw can reduce most harmful substances in water to ensure the safety of every drop of outdoor drinking water. Applicable Scenes : Camping, travel, hiking, boating, fishing, rock climbing and biking. Well-chosen filtration materials The 0.1 micron fiber membrane of the water filter straw can reduce most harmful substances in water to ensure the safety of each drop of outdoor drinking water. Smaller frame, bigger capacity The water filter straw is well-designed and small in size. Each water filter straw can provide 1,400 gallons of purified water at most, accompanying you to enjoy each outdoor activity and providing purified water for you anytime anywhere. Perfect combination, light weight and portable design The water filter straw can be matched with the collapsible gravity water bag, thereby perfectly meeting outdoor demands for water filtration and drinking. Meanwhile, the combination weighs only 0.48 pounds and can be directly stored on one side of a backpack without any burden. Review: Awesome, it works, and gives you a lot of options - 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. Review: Lightweight and a Great piece of mind at a reasonable price. - 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. ## Features - 5-Stage Efficient Filtration: With adoption of premium-quality 0.1 um ultrafiltration membrane and other raw materials, the Water Filter Straw can effectively reduce harmful substances like chlorine, particulates, sediment, stones, sand, dirt, bad taste &odor in water to ensure the water safety and deliver better drinking experience. - Professional Combination: Waterdrop Gravity Water Filter Straw with 1.5 gal Gravity-Fed Water Bag is an exclusive water purification combination created for outdoor activities and first aid survival. The large-capacity water bag can hold up to 1.5 Gallons of water at a time, which is about 11 bottles of 500 ml bottled purified water, and can meet the all-day demand for outdoor water drinking. - Longer Lifespan: The Waterdrop Filter straw can provide safe drinking water up to 1,400 gallons (5,300 liters), and ensures the maximum water flow rate of up to 700 ml/min to provide more relaxed outdoor water drinking experience. - Recyclable Straw: With innovative backwash purifier function, the inside of the Water Filter Straw can be kept clean at all times and it is recyclable, safe and pollution-free. If the water flow decreases or the filter has been used for a long time, you can remove the mouthpiece, flush it with clean water. (Standard water bag can be used or pop bottle with thread diameter of 27.5mm can be filled clean water for backwashing the filter straw.) - Versatile Uses: The Water Filter Straw can be connected with water bags or water bottles to filter water for drinking. Both ends of it can be disassembled and connected with the water bags and the water bottles to offer you clean drinking water anytime anywhere. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09285L8JL | | Best Sellers Rank | #3,047 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #9 in Camping & Hiking Water Filters | | Brand | Waterdrop | | Brand Name | Waterdrop | | Capacity | 1.5 Gallons | | Container Type | Bag | | Customer Reviews | 4.6 out of 5 stars 3,533 Reviews | | Included Components | Water Filter Straw *2, 1.5 Gal Gravity-Fed Water Bag *1, 16 oz Water Pouch *2 | | Installation Type | Freestanding | | Item Dimensions L x W x H | 10.16"L x 3.39"W x 11"H | | Manufacturer | Waterdrop | | Material | Hollow Fiber Ultrafiltration Membrane | | Material Type | Hollow Fiber Ultrafiltration Membrane | | Maximum Flow Rate | 700 Milliliters Per Minute | | Model Name | WD-FSBUL | | Model Number | WD-FSBUL | | Other Special Features of the Product | Gravity Water Filter Straw, Water Purifier Survival | | Part Number | WD-FSBUL | | Power Source | Non Electric | | Product Dimensions | 10.16"L x 3.39"W x 11"H | | Purification Method | Hollow Fiber Ultrafiltration Membrane | | Smart Home Compatibility | Not Smart Home Compatible | | Special Feature | Gravity Water Filter Straw, Water Purifier Survival | | Supported Water TDS Level Maximum (PPM) | 500 | | Unit Count | 2.0 Count | | Warranty Description | 30 days limited filter warranty - Any part of the water filter which fails due to a defect in materials or workmanship during this limited 30-day warranty. | ## Product Details - **Brand:** Waterdrop - **Capacity:** 1.5 Gallons - **Included Components:** Water Filter Straw *2, 1.5 Gal Gravity-Fed Water Bag *1, 16 oz Water Pouch *2 - **Installation Type:** Freestanding - **Material:** BPA Free Food-Grade Material - **Package Information:** Bag - **Power Source:** Non Electric - **Product Dimensions:** 10.16"L x 3.39"W x 11"H - **Purification Method:** Hollow Fiber Ultrafiltration Membrane, Activated Carbon - **Special Feature:** Gravity Water Filter Straw, Water Purifier Survival ## Images ![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 2 - Image 1](https://m.media-amazon.com/images/I/611WUYBZRqL.jpg) ![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 2 - Image 2](https://m.media-amazon.com/images/I/81ZCtN3mmDL.jpg) ![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 2 - Image 3](https://m.media-amazon.com/images/I/71uSFE33GtL.jpg) ![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 2 - Image 4](https://m.media-amazon.com/images/I/81RI4O90YVL.jpg) ![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 2 - Image 5](https://m.media-amazon.com/images/I/71l7DrdMZIL.jpg) ## Available Options This product comes in different **Number Of Items** options. ## Questions & Answers **Q: Can the straw be used on its own, the way the Life Straw can?** A: Hi, Thanks for your question. Please rest assured that it can be used on its own. If you have any other questions,please feel free to contact us. Kind Regards Mia Lauren Customer Service Rep **Q: Can I buy replacement filters for it?** A: Hi, Thanks for your interest in our filter straw product. Please rest assured that you can reverse-flush the straw (instruction included) to prolong its lifetime; furthermore, you can also purchase a new filter straw to replace the old one: Link: https://www.amazon.com/Waterdrop-Portable-Filtration-Emergency-Backpacking/dp/B086QKX42Q/?th=1&psc=1 If you have contacted us via email but received no reply, please check the Spam/Junk Folder first. Thank you. If you have any other inquiries, please feel free to contact us. 1-888-352-3558 (8:00 AM - 5:00 PM PST, Mon - Fri). Kind Regards Mia Lauren　 Customer Service Rep **Q: To confirm, are 4 20 oz BPA-free reusable collapsible water bags also included or this is just for the filter straws?** A: Dear Aaliyah, Thank you for your inquiry. 4 packs of 20 oz BPA-free reusable collapsible water bags are also included in the package. Please don't hesitate to let me know if you have any other questions. Kind Regards, Mia Lauren Customer Service Rep **Q: How long does it take to gravity filter 1.5 gallons?** A: Dear customer, Thank you for your interest in our product. Please note that it should take around 11-12 minutes to gravity filter 1.5 gallons. If you have contacted us via email but received no reply, please check the Spam/Junk Folder first. Thank you. If you have any other inquiries, please feel free to contact us. 1-888-352-3558 (8:00 AM - 5:00 PM PST, Mon - Fri). Kind Regards Mia Lauren　 Customer Service Rep ## Customer Reviews ### ⭐⭐⭐⭐⭐ Awesome, it works, and gives you a lot of options *by D***L on August 12, 2025* 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. ### ⭐⭐⭐⭐⭐ Lightweight and a Great piece of mind at a reasonable price. *by J***S on May 3, 2026* 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. ### ⭐⭐⭐⭐⭐ Travel WIN!!!! *by S***G on August 17, 2025* 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! ## Frequently Bought Together - 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 2 - Waterdrop Gravity Water Filter Straw, Camping Water Filtration System, Water Purifier Survival for Travel, Backpacking and Emergency Preparedness, 1.5 gal Bag, 0.1 Micron, 5 Stage Filtration, Blue - Aquatabs 397mg Water Purification Tablets (100 Pack). Water Filtration System for, Camping, Boating, Emergencies, Survival, RVs, and Marine-Use. Easy to Use Treatment and Disinfection. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/337013321-waterdrop-gravity-water-filter-straw-camping-water-filtration-system-water](https://www.desertcart.sk/products/337013321-waterdrop-gravity-water-filter-straw-camping-water-filtration-system-water) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-05-21*